I moved your post here because this particular subject has come up before in this very thread. Nothing personal, mind you.
I think if Duchess was in fact Frankie's IF there would have been some indication of that on the show by now. Plus I like to think Duchess would have a
much better attitude. While it is admittedly a possibility I think it is highly unlikely. I stand by my original theory, which is that Frankie never had an IF of her own and it's because her parents wouldn't allow her to have one. I can't prove it, but it's always felt right to me for some reason.
