It is fair. You yelling that it isn't doesn't suddenly make it so.

I understand it's aggravating and not perfect, but here's a question: did you ever try to get housing prior to relocation being an option? Because that was an unfair mess. The way it is now, even if people nab a lot from under you, their previous lot opens up. Everyone has the exact same opportunities. If your friend knows how relocation works, and is knowing and willingly lessening her chances to get a house, that's on no one but your friend.