It's not my style - seems so modern and so similar to other popular names - but it is not an unpleasant sounding name.
I agree with the other posters that it reads like a boys' name. Lowyn might cue that it's feminine.
You've probably considered
Rowan.
What about, umm,
Calla.
Or
Olive even?
I feel like there's a name I'm trying to suggest but I can't quite thik of it. It's not
Lauren... Maybe it's
Olwen??
