I'm not particularly fond of either name, these are my partner's choices, but I'm willing to compromise and try and understand why they're appealing.

I don't find the `brina` in Sabrina to sound very nice sonically. It sounds abrasive to my ears, but I'm not sure if that's just me being silly. I think maybe because I don't associate it with anything (other than Sabrina the teenage witch) that it kind of feels empty to me?

Audrey sounds really old, and like Sabrina, doesn't sound nice sonically to me. When I think of Audrey, I think of a grandma, so it feels like they'll have a really old name when they're young.

But open to opinions, maybe I'm missing something here.