Oh no Rae's just an absolutely awful person in a lot of ways. I think at least some of that is her not entirely seeing the world she's in as real and so feeling entitled to use her obsessive meta knowledge and bullshit protagonist powers to do personal wish-fulfillment stuff, though at least some of that involves helping people in ways she couldn't in her former life. But it is very much more just a story doing "normal isekai wish fulfilment with problematic implications, but this time it's queer wish fulfillment instead of straight." I will say that the LN does have Rae reflecting on how she's basically playing a homophobic caricature as a defense mechanism of sorts, but I can't remember if there's a point where she acknowledges that her whole plot to get Claire is gross and bad even if she's also trying to save her life along the way.

I think I've said this before, but her overall character arc should have been to grow and stop trying to impose her own desires on Claire while finding someone who actually reciprocated them, instead of just winning the explicitly-straight Claire as a prize for doing enough good deeds who was then perfectly happy to be her wife and spontaneously started reciprocating her feelings.