One thing i've learned is there is 3 sides to every story, theirs, yours and the truth. Seems like if both her and your kids are in school/daycare she really needs to get a car. If i were you i would'nt give her any cash, i would just buy the groceries/household stuff she needs and bring it over. If you're paying her bills you could always pay em with a debit card or give her a filled out money order.At least that way you are making sure your kids are getting what they need, and if she needs anything for herself she'll have to find someone else to get it for her. It also might not be a bad idea to consult with a attorney, just because you weren't married doesn't mean you don't have rights. Best of luck to you!!!