I’m so glad you are keeping her! Cross beaks are the best I think. I have a young pullet with a cross beak and she was on mash for a little while, but she is now eating the normal food fine. She has also learned to pick up things and can eat fruit and leaves. Thankfully a the crop is a good way to tell if they’ve gotten enough to eat. Deep food and water bowls work well.
Trimming is also important. Since you caught it early, I would recommend filing it ever once a week or so, starting in a few weeks. That way it doesn’t get too long. My pullet was caught rather late and it’s longer than it should be. I use a nail file. If it’s maintained it will be a lot easier for her to eat and groom
Here’s my girl:
View attachment 2447024View attachment 2447025View attachment 2447029
View attachment 2447031
As you can see, it gives her an adorable little expression!