While I haven't been on the inside of Rush yet, I do know people. You are probably taking this too seriously. I can't imagine that these girls would judge you on something that they heard from what seem to be (by your description of their behaviour) people of doubtful character. And remember that that girl has only one vote. Also, she may have been sympathizing - and then got called away or saw something that needed her immediate attention. I wouldn't worry about it. What will be, will be!
But I do wish you good luck!!
Allie