I agree with CRS here. Let her look at several rifles that you know to be solid.

Since you are a handloader, I’d 100% go 6.5CM for maximum usefulness later. My kids shot downloaded 260 and 7-08 boltguns in youth stocks when they were 7 years old. I bumped up the loads as they grew. Powderfuff loads were like shooting a 223. Various 100gr hunting bullets at 2800 or so in the 6.5 would approximate the performance of a factory 243 load in a youth carbine, and those have killed a lot of game.

Now with even more aplomb