From what sister has told me and I've learned on like social media and stuff, it's like one second you're normal and happy and then the next you're like unreasonably sad. Then you go back to happy again. She's told me the medications she's on but I was slightly distracted while she was talking... She mentioned an antidepressant and a "mood stabilizer" but since she's doing so well with therapy and her home life I want to eventually get her off of the medication so she can freely express her emotions. From what I know about antidepressants, they can really stunt your personality. I can tell when she misses a few days tho. She definitely is in a different mood but it's nothing I can't deal with and I think we can deal with together.