My DD is 18, she works part time and ordered a dress for her best friend's birthday party on the 19th December. She ordered this dress on the 9th of November from a woman who runs an individual 'legit' business, apparently DD's friends order from her and such. The estimated delivery for DD's order was 2-3 days, it took 3 weeks and arrived on the 24th of November only for DD to open it and realise it wasn't the right dress. 
So DD contacts the seller and informs her of this. She apologises and tells her the correct dress will be posted out as soon as she receives the wrong dress back so DD pays to post the dress back that day from our local post office and waits. She's told me all this today as there's still no word from the seller. I've agreed to take DD shopping for a back up dress but contacted the seller through DD's email. I inquired about her receiving the previous dress (DD was smart enough to track the dress she posted, the seller had indeed received the dress.). The seller replied that she hadn't received it so therefore she wouldn't be posting anything out.
I've went through all conversations DD had with this woman and through details that were given. There was no mistake, DD posted it to the address that seller gave and she defiantly received it. My DD works very hard for her money and the thought of her being ripped off like this really upsets me, though I could be hormonal and unreasonable.
AIBU?