Feel a bit silly asking....
In the autumn I went for lunch with two school mums A & B. B had moved recently to the area and she has a son in the same class as A & me. Tiny bit of background which is relevant - I have known A for about 4 years through playschool etc but gradually started to feel a little uncomfortable about a few things: found her to be a little unreliable, bit of a drain etc. So made a decision to cool things a bit, keeping the 'better the devil you know' mantra in my head. She is ok in smallish doses.
When we went for the meal I miscalculated the bill and friend B and I ended up paying for us all. A owed us £10 each and said she would give it to us etc.......
Haven't had it yet! Am I petty asking, as she would say 'its only a tenner' etc but because of the fact that I don't regard her as a close friend I know that I am never likely to see it if I don't ask.
Oh and what do I say?