super_hunt...
I'd say there is very little chance that a Lehigh doesn't exit. Nobody has shot any game (to my knowledge) with the CF's as they are new, but the track record of the bloodlines is they power through all the time, and the CF is basically a new/improved bloodline. That is what they are designed for, the petals peel off and spiral in various directions, the core drives all the way through and out. I know Sabotloader has had perfect (and impressive) performance with them on Elk.

I bet she would do just fine with a 240/250 XTP and 70gr powder. Easy on her, should perform perfectly on the deer. I would also have her shoot for the lung shot. Sounds like she's a good shot... you know they'll be dead for sure with that shot.