I took my friends son out for the day with my daughter.
We planned to eat out and she told me she didn't have any cash on her but to let her know what her sons stuff comes to and she will reimburse me for everything.
The evening we got back I text her the amount and said no rush etc, it was only £15.
This was a month ago now and still no money. I don't know what to do tbh. Would I be unreasonable to mention it? I know its not much but its my money :(