I sold a lady a 30 gallon sized bag overfilling with baby clothes 3 weeks ago for $30. She messaged me 3 days later saying they smelled like moth balls (they have been sitting in my attic for about 2 years). I had kept a whole bunch of clothes from the same batch of clothes and washed them and they were fine.(I didn't think they smelled in the first place, musty if anything from sitting in storage.) I've sold some of the clothes to other people and no one had any complaints. I told her how I washed them and she said okay she would try washing them my way. It has been over 2 weeks and she just messaged me saying she wants her money back. The last time she mentioned anything to me was August 16th. I spent the money last week after giving her plenty of time to say something. Am I obligated to give her her money back? I don't want to cause a hassle with her but she could have just kept some or ruined them and is trying to screw me over. I also find it funny that myself nor anyone else had any issue with the clothes. What should I do?