Bully Stix, pig ears and rawhides are choking hazards for these guys so I would stay away from them. I waited until mine was 4 months old to give her an antler so you should be fine. Stay away from the split ones as those tend to splinter. If you can get moose flat paddle I suggest that as it is not as big in diameter and from experience tends to last a bit longer. For deer and elk antlers just watch out for points that develop and sand them down or cut them off with a hacksaw if you see them.
You still need to keep a close eye on her as antlers can break teeth if they get real crazy with them.