As someone with exactly the same interests, I gotta say that, sadly, there isn't all that much for us. You'll have to make cut backs on your expectations for the most part. That said, here's a few recommendations:
Areas of Gray - Not exclusively FMC and shows the perspectives of 3 characters, albeit a bit more focussed on the dad. Pretty hot, though.
Coming of Age - Not particularily well written and you'll have to grind or cheat quite a bit to get to the F/D parts.
Dilmur - Great art and decent writing. An all around good FMC incest game.
I love Daddy - Absolutely amazing for such an old title. It came out when the porn game market was still in its infancy but it has multiple endings and all kinds of family fun.
The Fall of Juliet - The art's kinda retro, but still quite enjoyable.
