[Havoc]

In all seriousness though, if she does end up taking the dead end room simply agree to knock before opening the door from either side. In the end she should think about your privacy a little if she's going to be barging trough your room all the time. If she's even a little reasonable she'll understand. If she's a prude she'll make a disgusting face and want to switch rooms. Either way you win. And if all that doesn't work, just let yourself get caught once. She'll knock after that, trust me. Either that or she'll want to sex you, but that generally only happens in porno.