Oh she's going to love it!!
Just make sure you trim off all the extra fat and meat, and scoop the majority of the marrow out. Also, ask if you can get a few knuckle bones as they seem to last a long time.
My dogs will chew on theirs for a few hours and then come inside. They usually don't touch them after a day or so, but I just leave them outside and then throw them out after a couple days.
Oh and one final thing (and I'm sure you already know) but make sure you're there to supervise them while they're eating their bones