-on AO3, post war, Auror harry potter. Harry along with a bunch of people are cleaning out malfoy manor, dark magic gives like "spell sickness" or something so they have to rest frequently to take potions, I think there's a cursed portrait in one of the rooms that yells curses at you/makes you depressed. It's a completed work. Thank you!
Hello! We're not sure we can be of any help, since everyone on our team agrees that your description sounds just like Heal Thyself by astolat. Which is multiple POV, it switches about 2/3 into the story. And includes a Reviving Draught just like you described. Here's an excerpt about the portrait:
"They just managed to get out the last one before sunset: a portrait of a young girl sitting in a chair who looked at them with clear black eyes after they uncovered her, and started asking questions in a mild voice about what they were doing and who they were and whether they ever thought about just slitting their wrists sometimes, and Jeremy and Ron had to drop it and run out of the vault again with her plaintively calling, “Come back, come back, I’m lonely,” after them. They stood in the study shaking violently until Hermione cast a Major Cleansing over them both, and followed it up with Intensely Cheering Charms."
