She really is taking the p Debbie
I used to have a friend who was always borrowing from us - items and money - and with the money she was always promising to pay me back at the end of the month so we'd meet in town when she got paid and she'd spend a small fortune in the Bullring on clothes, books and silly things like X Box games for her husband, spend a load in Lush and then afterwards, usually in Starbucks with a large latte and a big slice of cake in front of her, she'd always always ask if she could the pay me back the following month as she had no money left!! In the end, after I gave her an ultimatum date and she'd paid back her final debt, I just cut off contact with her.
It's always us who people seem to come to for favours or to borrow things, yet we get by on our own if we need anything. We've been stung once too many times though and are more reluctant to help out now.