Last month I sold a cordless vacuum cleaner in perfect working order for a lot less than it was worth because I needed the cash. Someone bought it, took it away and I spent the money on petrol. The next day she messaged me and told me that it wasn't working and she wanted to return it for a refund.
I told her I'd spent the money but if she could wait until the end of the month when I got paid I'd refund her then. She never replied to this message and I've not heard from her since.
I've budgeted the money to pay her back but honestly I'm living hand to mouth at the moment and could really do without paying her back if she's not chasing for it.
So how long should I leave it before assuming she's changed her mind about the refund? Or is it the right thing to message her and ask if she still wants to return it?