Girl- I appreciate your rant. I used to be THAT girl with the car. I learned my lesson. When things get broke or run out- Will they be at the MAC counter with you pulling out their card to buy YOU more or themselves more? it sux that our friends treat us that way at times but i guess if they don;t know its a problem how can it be fixed. ya know. ( Ugh..I hate conflict)
You may just have to tell them you will meet them out or they can bring their own make up.
love N peace, Cocoa_love