You daughter could have interest boys and still not experience sexual attraction. As someone who identifies as asexual, I’ve certainly have had romantic feelings for people. I’ve still wanted to be with people… But I never wanted to be with someone… Even in that period of my life when I was away from the Church.
It’s also something that took me a long time I could admit to myself.
Whether or not it’s part of the LGBT community is debatable though. Some people in the LGBT community are cool with it since in this world, there’s nothing more queer than not wanting to have sex. Others think heteroromantic aces aren’t facing any discrimination.
I don’t think the Catholic church has any statement on asexuality though. I’d imagine they think it doesn’t matter since we don’t have a calling to have sex.