Am I in the wrong? I don't think so...

Ok.. haiz.. I've got an issue here with a "close" friend of mine.

Apparently, I've topped up with another studio to get nicer gowns as I couldn't find nice gowns from my original studio. However, this new studio which I've topped up was introduced to me by another friend who is also getting married in November. So now, I've really made payment and signed the contract with the new studio. Suddenly, she came telling me she is super upset with me for choosing the same studio as her??! Telling me that I haven't took her feelings into consideration??!! Asking me to put myself into her shoes to think how she is feeling now??!!

The thing is:
1. Why hasn't she voiced out earlier? If she has done that before I've made payment, I swear I would have taken her feelings into consideration before deciding whether to top up. By the way, the consideration period was about a week and she was jolly well aware of it.
2. I've indeed put myself into her shoes and I've concluded: I won't mind a single bit if she were to decide in the same studio as mine. She has requested me to help her ask about the wedding packages from my original studios hence I was under the impression that she may be interested to take the same studio as me. I was more than happy to help and I didn't mind at all. As such, I am really taken aback when she came telling me these..

Ok fine.. what is done is done.. I've sincerely apologised to her for being so insensitive. But she is still very emotional over this matter. She has put up a comment on facebook to say that she is upset and what can she do? People including our bunch of friends (who of course know what's going on) are happily commenting on that comment of hers. I mean.. my dearest bunch of friends.. you guys heard us arguing and almost quarrelled.. so.. please stop commenting and let things rest can we? unless you guys really want both of us to end up quarrelling!! haiz... I'm kind of speechless and helpless.. she is upset and I'm equally bothered by this matter...I don't know why things have progressed this way.. Although I still don't think I'm really in the wrong.. I apologise to her as I treasure her as my friend.. I hope the rest of the bunch can help by stop discussing about this matter.. really..