Maybe, but I would bet that whoever put them there or lost them there is long dead. Besides, the chair was probably second, third, or fourth hand when she bought it. Keep it.
And...she didn't FIND the chair...she BOUGHT IT. It is now HER PROPERTY. Besides...who knows where that chair came from? Maybe the person selling it bought it from someone else...I think this is legtitimate for her to keep and claim as her own. They were selling...she bought for $2. A sale is a sale. I say good for her. Hoep she does a little good work with some of it though.