Should my boss pay me if she goes out of town for a whole week?

I'm a nanny and my boss and her daughter are going out of town for a whole week. I think she assumes I'll be okay without getting paid this week but I'm not. I'm broker than broke and can't afford for her to not pay me.

If she's going out of town should she pay me for the week I could of worked? It's different if I were to go out of town, I wouldn't expect pay.