Alright, so I came back to this game after a few months because I didn't like the forced interactions between R(Lina) and Rachel, so I decided to do a few new routes to see if I could a girl to stick with going forward.
I did Jen's route, Fiona's sub route and Rachel's Romance route, and out of those three, only Fiona's out of those three gave me some really good feelings. After breaking down that exterior, helping her, seeing her smile and lower some of her walls, she really is a great character.
I don't ever do Dom/Sub routes in games. I tried it with another game (SL) and I didn't like it, and I know Fiona only thinks that the MC doesn't care about her that way, but it's pretty obvious though the MC's actions that he does. Going forward I probably will do a save for each Fiona route, but as of right now, I can't find anything wrong with it that would irk me personally. She's done with guys, only had that one interaction with her roommate (I know she has a scene or two with Jen according to the WT PDF but I haven't seen much of that) but you can tell deep down (at least to me) that she cares about him, especially since she said she wanted to make a good family impression.
Hopefully, she'll WANT to be with the MC, rather than this Dom/Sub relationship they have now, but I can see it happening (at least I hope so)
But as of right now, she's my #1 in this game for sure.