Well, isn't she cute

Yes, I agree she has a beak deformity. It's good that she's eating/drinking and growing!
You're doing good - a lot of times all you can do is monitor them - you may want to weigh her so you can track her weight to see that she's gaining weight. And watch that she's not having trouble eating - I'm sure you have read up keeping cross beak chickens - providing a deeper dish if needed, wet feed, sometimes a beak needs to be trimmed, etc. - but right now if she's doing great - then I wouldn't change a thing.
Sometimes when there's a deformity, there could be other developmental issues that come to light as they mature. Many people have birds that may have a little something wrong and just adore them as pets - I love her expression LOL I would say, if you are planning on breeding/hatching eggs - I would not use her for breeding, just in case the deformity is genetic and is passed along - it very well could have been an incubation problem, but you never know. Anyway....enjoy her! I would
Thank you for the update.