All she succeeded in doing was to alienate herself from her housemates and risk any of them telling Preston she is difficult. I see no winning strategy in this game other than being genuine, keeping a low profile in the house and sincerely seeing if a connection can be made. You just can't create a spark. It is there, or not.
Why not talk about favorite food, movies or personal style of living? All of the women on these shows ask about how the man feels about them way too soon or fakes being very attracted before she even knows the guy.