So this girl had been asking me to sell my prom dress and bought it from me a couple of days ago and told me she would get me the money and now she wants to return it and not pay at all.
This is the letter I wrote her concerning the exact facts on the matter. I am wondering if it is wrong to ask for the money. My mom says to take her to small claims. Do I have a case at all?

I am not trying to be in any way ugly or cause bad blood between us but here are the plain hard facts. On Monday morning May 21, 2012, you came over to my house and tried on my $600.00 Sherri Hill Mermaid dress after having several Facebook conversations with me concerning the dress and the price I would be asking. After your boyfriend, Mark, approved of the dress, you then told me that you would be purchasing the dress and that you were waiting on a check to come in on Wednesday, May 23, 2012. I had a witness, Maggie Huntington, who was there at the time you said you were going to purchase the dress. After this, I agreed upon good faith, that you could take the dress home that day provided I was paid in full for the dress whenever you got the money. I do not think that anyone could deny this verbal agreement of sale.

With that said, a year ago, you asked me if you could borrow my dress for a formal event that you were attending and I said no, because any wear on this dress decreases the market value of the dress. This dress is very fragile and even trying on this dress decreases the market value since the pearl colored piettes fall off frequently. For this reason, I would not have let you take the dress home with you had you had any second thoughts about purchasing the dress. More over, I do not know how many times you have tried on this dress since you’ve purchased it or the conditions in which you have kept the dress since the 21st. The minute you walked out of my house with the dress in your hand it became yours and the full payment was expected.

I have been more than flexible when it came down to payment for this dress, and still available for consultation as far as payment goes, but the dress is yours. I had many offers about this dress, but your love for it was just as profound as mine was when I first received it, and that is why I let you buy it from me and take it home as yours. I think it is not unreasonable for me to be asking that you be forthcoming and hold up your end of our deal. I would greatly appreciate it if you could please get back to me about this matter.