My little sister has just started a Masters. She did really well in her undergrad and we are all very proud of her! However, she's had quite bad mental health (self-harm and problems with eating), so we all keep a close eye on her in terms of checking in with her, etc.
She has been staying with me and my DH for her first term as we live in the city she is studying in. The plan is for her to find a flat in January (when she will have more money). My DH works from home in the mornings, and goes to work at lunch time and I come home at lunch times to feed cats and usually end up working from home (I am a research lecturer).
My sister gets up at 6am. Breakfast with me at 7am. Walks around the block until 7.30am - work starts at 8am. When I'm gone, DH says my sister puts her headphones on and does not look up from her laptop unless her asks her if she would like a cup of tea or to remind her to have lunch etc. She is less polite to me when I ask her (she tells me to stop interrupting her). She stops for her tea around 6pm. And then works up until 10pm at the kitchen table. This is everyday. She gets stressed if she has to take time away from study - often declines plans to go out and socialise.
When I ask her why she does it she says she wants to do well and prove she is more than her mental illness. I'm very worried that this is not normal behaviour - nor sustainable.
AIBU to ask for help in how to help my sis?