Nim Rod, unless y'all are able to reload (and even then it is difficult to get components), you need to try to explain to your daughter that .308 ammo is virtually non-existent in today's market. I had to get into reloading just to have a chance to shoot my .308... but I do love reloading now
.270 and .30-06 ammo can both be found, and with a muzzle brake are better choices than the .308 right now, in my opinion. However, the 7mm-08 still tops my list.