Absorbing a dragon soul often leaves ada in pain for the following days, her chest constricting and her jaw turning stiff
her physiology very slightly changes too, from the inside out
first, it's very minor, with her bones themselves growing denser, then the nerves in her back growing sensitive to the point where she never removes her cloak, for she can feel every slight shift in the air against the back of her skin, and her hair brushing against it itches like a million tiny chaurus scuttling over her
then it's her blood - auri notices it first, when she frees serana, a distinct smear of near translucent blue against the dead stone
she would have brought it up sooner but she didn't want to stress ada out more than she was with the whole insane vampire tyrant thing
while she's not out here sprouting scales, some patches of her skin, namely on her chest and lower back, start turning thick and leathery, eventually growing deathly pale and almost stony to the touch
when her and the gang make camp for the night, she begins sleepwalking if there's a nearby dragon nest or burial ground that she's cleared out and she'll just... stand there, watching everything in her eyeline
the gang are able to pass it off as stress and tricks of the eye, but it only gets worse after miraak's cultists land on skyrims shore
they attack her outside the college, when she's about to head in for the day
the only person who really sees it go down is faralda, since she's the one who runs down to try help ada, but ends up being the one who has to drag ada off of them, their bodies still twitching under layers of ice encasing them, their limbs breaking apart into stained shards under ada's bare hands
the whole thing really shakes both of them up, and despite agreeing to keep it quiet, faralda does advise tolfdir to keep an eye on ada, since she practices her thu'um on the roof of the college between lectures
it all comes to head when tolfdir finds her up there curled up in pain
the inside of her mouth was scalded and burnt, her sword arm broken via elemental fury and the muscles in her other arm pulled to shit after having to brace herself against one of the walkway arches after her whirlwind sprint went further than she expected
eventually she passes out from the pain and wakes up a week later to inigo and lucien carrying her up the 7000 steps before handing her over to the greybeards to take her to paarthurnax
she's at the throat of the world for at least 4 months just recovering from her injuries, and then a further 2 months studying with paarthurnax
before she leaves for solstheim, she leaves lucien behind to look after her family, in case those cultists try anything while she's busy hunting miraak