Well really, it's water under the bridge at this point and there is nothing you can do about it now.
Concerning staying in Tri Pi and making the best of it, I suggest reading these 2 posts (and really that whole thread is good) Best of luck with your decision:
Thank you This helped. I think a big part of my doubt is that it seems EVERY girl in Tri Pi is SOOOO excited to be there (even since walking in the house on Bid Day) and I've felt like the odd one out.