I purchased my first Android phone at 13, the Motorola Droid. In less than a month, it was rooted running a custom rom. I rom hopped weekly, tried all sorts of hacks and modifications, and eventually started releasing my own (very crappy) custom roms. I did this all the way through until I had the G6.
I eventually started getting phones where I can unlock the bootloader, and for a bit I would root such as my Essential phone or my Pixel 3a or 4a 5G but since the Pixel 6 I haven't had any reason for perpetual root. I unlock my bootloader, and I root when needed and remove magisk when no longer needed. The cat and mouse game of trying to bypass detection alone makes it a pain when I have banking, work apps, etc that all validate hardware attestation.
You're a good parent, your daughter will remember this years down the road.