personality: canon divergence. I have stressed this many times before, but---she is an accomplished healer. as "funny" as "old woman who lives all alone in the woods doesn't to be bothered and hits people with her broom" is to the writer, it seems nonsensical to me. no one who studied for years to have the credentials to be a healer would actually hate people. I know that it is supposed to be because she is Grandine's counterpart and Grandine loved humans, according to Wendy, I don't like it because it flattens all characters originally from Edolas to carricatures, to mirror images who do not exist outside of being a reflection. I think she is a woman who lost the entire world she called home, who has overly keen senses that put a major strain on her (cause migraines and overstimulation, sometimes) and who has chosen "living alone in the woods" as the most reasonable accomodation for her needs.
personality. so if she is not the carricature, what is up with her personality? slow she is to trust, slow to anger. she is honest and blunt, having little patience for mindgames and minced words. she is dutiful as a healer and she continues to learn more about her chosen field every day. she is loyal, as long as she receives loyalty in exchange for hers. she likes to be out in nature and she detests artificial scents (they make her sneeze).
mental health. there is definitely some neurodivergence going on, certainly some depression and trauma caused by the aforementioned loss of her entire world of origin, but I am presently not in the right mindset to diagnose my muse
expertise & knowledge. she possesses a wealth of knowledge when it comes to lacrima because Edolas was reliant on the material. Edolas possesses more knowledge of lacrima than Earthland because Earthland can solve things with magic while Edolas needed to rely on technology.
magic. in my opinion, Edolas was once a world of magic but lost that magic somewhere along the line. this theory is connected to the fact that Edolas does not have dragons, but Faust designed his construct to look like a dragon which i take to mean that once upon a time, there were dragons in Edolas---maybe dragons were even able to travel between the worlds. for this muse, it means that Porlyusica is descended from mages, leaving her with the latent ability to use magic but without the ability to gather magic from her environment because the environment was barren. she was not able to cast magic in Edolas. however, upon arriving in Earthland, she was able to gather magic from her environment and promptly got very sick as her body was not used to this.
family. @reivun is her son. their relationship is quite complicated because they are both complicated people, but there is love. but there is also the complication of "what do you do when you love your son but you have come to acknowledge that your marriage probably left you with quite a bit of trauma?" on one end and a dose of "you realise your mother was young and had dreams and hopes of her own and much of it is now ashes and a grave" on the other.
relationship, marriage and divorce. please refer to this headcanon
reputation. please refer to this headcanon
canon divergence re: the entire war arc. there is no reason to assume that zeref does not know that fairy heart is located in magnolia. or, at the very least: fiore. thus, mounting any war effort towards a country that is not fiore makes no sense. it means to create battlefields that are a waste of resources. and while he has resources, i still think he would want to win the war swiftly, obtain fairy heart and go on to relive his life after getting rid of acnologia. even faking to be serious about destroying all of the continent would be questionable; he is emperor and it is unlikely that anyone would have really questioned his strategy. especially since once fairy heart had been obtained, the continent of ishgal would probably have fallen very quickly. fiore is, thanks to makarov’s secrecy, unprepared and would have no time to call upon their allies and their allies would have no time to rally their troops and come to fiore’s aid. in fact, that even so many guild mages were available should be a minor miracle — it should generally be assumed that especially s-class mages would usually be on long-term quests.
tl;dr: the empire focused their attack on fiore and fiore alone and did not bother with other countries since it would have been a waste of time and resources alike.
canon divergence regarding chapter 469: this is a matter of personal discomfort, but as i have lost my grandmother to cancer, i hate the use of cancer and similarly illnesses to ramp up the angst factor. for this reason, natsu having developed an anti-ethernos tumor did not happen and i will ignore all references to it. i have not yet read how it all plays out but as it indeed does not have any major plot relevance because brandish fixes it in about five minutes, i think i am better off without this vague idea of a subplot.
additionally, porlyusica is one of the best healers in all of earthland so please erase her line 'but there are no surgeons in ishgal with the requisite level of skill…’ from your memory because had it actually occured, she would have had the skill. she is canonly an accomplished surgeon so i don’t know what the hell this is suddenly about.
canon divergence regarding chapter 512: porlyusica did not tell lucy to strip down and warm natsu with body heat™. while as a healer, she has personally grown used to nudity, she a. knows that this is not the case for everyone and that some would be uncomfortable and b. she is too level-headed to jump to the same ideas a teenager writing a fanfiction, lord. if anything, she suggested to summon aries to have her provide warmth via her wool magic as lucy has no spirit capable of using fire magic.