BassChamp,
Two thoughts on your question:
1) Try her with something like a .257 Roberts or .260 Remington. (best option IMO) Alternatively, she's using an AR, get her an upper in 243 WSSM, 25 WSSM, 6.5 Grendel, or 6.8 SPC.
2) If you have no choice but to use the .223, use the heaviest bullet that will stabilize over the distance your daughter will be shooting. If the twist rate to see if it is 1-12" or faster, the 60 gr Nosler Partition should get all the way through with a smallish exit hole. If you've got a 1-10 or better the TSX will go through with the presentation you described, but with a larger exit wound and likely some blood trail.
For more information on the Barnes TSX, see Graybeard's thread at
http://www.gboreloaded.com/forums/index.php/topic,187255.0/topicseen.html and go to the Barnes web site ()
Recap of Barnes recommendations:" *To stabilize in flight, ... 53-grain TSX bullets require a 1:12” or faster
twist; 62-grain TSX ... need a 1:9” or faster twist. ... while the 70-grain TSX"
needs a 1:8” or faster twist.
Re-reading your post, Federal, among others, offers both 55gr TSX and 62 gr partition loads.