I bet she'll be just fine....I had a similar problem last year with my gf and I brought her to the range, let her watch me shoot my .45 and my 30-06', and then she picked em up and out shot me!
Just tell her not to be intimidated by it..Also, get her some good plugs or muffs, cause alot of times people feel more threatened by the muzzle blast than they are by the "kick".