What should she do?

Oh, Sneezy! Blessings to your mom for taking care of you as any mom should do. It seems to me that her sister (your aunt) would have wanted to help her sister out with you and given your mother the opportunity to work part time while auntie stepped up and assisted you part time. Personally I think that things could have been handled differently; but then again, I don't understand your family dynamics at all, so I really should not have even suggested that. What I do know, however, is that if your mother does not speak up (she does not necessarily have to blow up); but she could ask for a meeting before the opening of the store in the morning, at the closing of the store in the evening; or even suggest a huge family sit-down meal or buffet where everyone is present. In an atmosphere such as this, the situation may be able to be presented in such a way that it is non-threatening or accusatory in any way and toward no particular person. If she does not soon express herself, she is putting herself at risk for stroke or heart attack, in which case she will not be able to work again for awhile. It sounds as though you have a wonderful family that has held together a family business for a long time and that is remarkable in this day and age. Good luck and may the god and goddess bless you and your family ~Donna