This storyline might not be canon, BUT...

Susan wishing she was more attracted to Catalina and could have gone on a date with her - Canon.

Susan thinking it was sexy when Catalina kissed Elliot and having a conflict of internal logic over it - Canon.

What's not canon is Susan knowing who Catalina's girlfirend--Actually, I'm not 100% sure on that. I'd have to think it over, and will have to think it over. I'm certain it's canon that Susan and Rhoda haven't met yet, but Catalina and Rhoda are also canonically terrible at hiding their relationship to the point where people have guessed it on their own, and Susan is a literal genius with strong observational skills, so...

Yeah, she probably knows.

As for what word I would use to describe Susan in regard to who / what she's attracted to... Dude, I wrote Ashley. Frustration with labels came from the heart. MY HEART. And Ashley's heart. Our hearts? Aw, that's sweet.

Anyway, there's probably all sorts of words that could be applied, If you think a word suits her feelings, it won't bother me if you use it.

I mean, it probably won't. There are mean things you could say. Those would bother me. Because they're mean. Why would you be mean I don't understand