Don’t blame yourself. Everyone has rough patches and hard times and it seems like you both are going through one. People say harsh things and stuff they don’t mean while stressed. I understand the guilt of needing someone to care for you at their expense, but she agreed to this. If it’s too much for her, you need to have a discussion about it. Maybe friends or family could help in small ways to take off some pressure?
this is the first time she is financially supporting us (I usually work 2 jobs while she’s in school but have been too sick to do so this summer) and it’s definitely weighing on her, but she knew she would have to partially be a caregiver if we lived together before we even got into a relationship. She has so much going on and I know I just make her life harder