How can I get my mom to go grocery shopping?

So I’m 20, going to college and live at home, so she has no legal or moral obligation to have food around. This is not a financial issue, she has made it clear why she refuses to go grocery shopping and we are not that poor (she just came back from a trip to las vegas for example). I would just pay for my own meals, but no matter how hard I’ve tried in the past year I can’t get a part-time job (in large part due to the fact I can’t drive for physical reasonss).

So my story. My mom refuses to go grocery shopping because she says we don’t clean enough. I try cleaning a lot, but she’s a natural clean freak and I’m naturally messy, so no matter how hard I try, I can never clean good enough for her standards. I try so hard, but alas, I always fail miserably.

Next week she will be out of town for a week. She hasn’t gone grocery shopping in about 6 weeks, because of the cleaning thing. The two things I usually eat when she does this, pasta and rice, are quickly running out.

Do you think there is anything I can do to get her to go grocery shopping before Sunday when I’ll have to fend for myself with no money for a week?