Oh sweetie. My heart goes out to you. I concur with what everyone one else is saying. Go to the Preference party and if you still don't feel they are the right ones for you then don't put anything on your bid card (b/c then you will be eligible for COR/COB).
One thing to remember is that many girls realize that this is the house they should be in at the Pref party. The pref ceremonies are the "clincher" in getting a girl to pick you (and obviously them picking her). The ADPi pref ceremony for me sealed the deal.
Another thing to remember is that rush is so formal, many rules that have to be followed, much stricter guidelines, but COR/COB is much more informal, much more laid back.
Question for all, since I'm not sure, could she be snap bidded? I'm not sure if the school does snap bidding, but even though she was dropped could she be. Not knowing the circumstances of being dropped they might not have really wanted to drop her but needed to drop a certain amount.
It really is a catch 22. If you can be snapped bid that is a possibility (but you might have to fill out the bid card) but if you fill out the bid card and Doug offers you a bid and you don't take it than you can't COR.
Good luck sweetie. I don't know you but I wish I could give you a hug.