Thats what I did. The full size stock wasn’t necessary because of the spacer it came with. Someone else wanted my compact stock so we traded.Tikka in a compact stock.
Then buy a full sized stock.
Wise words, and similar to my experience raising my son.I wouldn't worry about it being her first and forever gun. Buy her something that fits, something she holds and handles good. If she keeps hunting and loves it, then invest the money later on the forever gun.
Based on you saying it's her first gun, I'm guessing she's around 12 years old, well my daughter grew about 16" from 12 to 15 years old, the gun that fit her right at 12 has zero chance of fitting her now, and she use to like the .223, not she likes the .270 because she's bigger and it doesn't have really any recoil for her anymore.