Let me just say, the description you gave of your character Cara, makes me really want to read more. I want to know what is happening, everything! As soon as it gets published (if that's what you're aiming for, that is) I will definately go out and get it... Wait, maybe not right away cuz Borders is deseased...
It's an old theory, and to some extent, I don't doubt it's true. People who are normally heterosexual can be attracted to people of the same sex, and people who are normally homosexual can be attracted to people of the other sex. Females seem more flexible in their sexual orientation than males, i.e, they're more bisexual than males.
Thanks. I don't really understand that theory, and have never learned about it ind depth. It's new to me because I was originally taught that homosexuality (from my lesbian Sociology teacher) was set at birth and not flexible. I think she was staunch about this because some people think that homosexuality is a choice and that homosexuals can learn to choose to be heterosexual. I agree with the theory to some extent too--and that women seem to be more flexible. But I also think that it is more socially acceptable for women to act homosexual (I still remember Madonna and Britney Spears kissing), whereas male homosexuality is more taboo.
At issue: The Greeks had four words to describe live, ranging from relationships between the divine and mortal beings (ἀγάπη agápē), Love of people for people, (φιλία philía), Families loving families (στοργή storgē), and love of flesh for the flesh, (ἔρως érōs). [ en.wikipedia.org/wiki/Greek_words_for_love ]. Thanks to the puritans and their offspring, in America we have only one meaning for love, that being sex. Humans are social animals. we need personal interaction and physical contact with other humans. This is likely why wrestling – the oldest martial art known to humanity, and other animals – has been around for so long. It would take a neurotic or psychotic break to create someone who does not want that contact. And many of them have pets. Now, take that fundamental need – as needed to a newborn as food and water – and toss in puberty and see what happens. This is where the genetic link exists. Some go through all that pubescent wrestling and come out just fine. others like it so much they go back and do it again, even at fifty. Some are so brutalized (Maybe because of a lifetime of humiliation and psychological abuse) they feel raped and need to humiliate the people who did that to them, even if that person wasn't even there at the time. I think this is where homophobia is born.
As awesome as lesbian superheroes sound, if the characters won't fit together, you shouldn't try to force it. I could see Cara maybe developing something like romantic feelings for Sharon, after being alone for so long, but would Sharon fall for Cara? Unless you're going for like a freaky Stockholm Syndrome thing, which would be hella interesting. Even if Sharon doesn't have romantic or sexual feelings for Cara, you could go the platonic love route. Based on your descriptions of these characters, seems like that'd work better for this particular story. Just because they have no desire to pork doesn't mean that they can't have a strong relationship with each other.
I dunno, seems like they would end up really great friends that depended on each other, like what happens between soldiers on the battlefield, not lovers. Unless there's a catalyst in there for a change in their relationship. Best advice would be, "Don't force it." Keep it subtle, even if the events of the catalyst are big.
I don't think it's a matter of how far anyone would go for love. Either they are attracted to each other or they aren't. As Islander pointed out it most certainly is plausible, but irregardless of whether or not anyone would ever find out, that doesn't mean they're going to hop right into bed, lol. The attraction has to be there and it has to be the right type of attraction. If you force it, it will seem forced, if they just naturally end up going that way, it will seem as though they naturally progressed to that point. Obviously, if it does end up that way, the second way is better.