After replying multiple times to this thread, I though I am thinking about this as "I" would get my wife. In reality, what I would do is take my wife to a gun shop with a good selection of multiple brands. Then let the shop show her the selection, and shoulder a bunch of them. Find what fits her. That will narrow down the rifle. I'd lean towards Reminton 7xx, Ruger 77 or Savage 1xx but not rule out others. Would also lean away from entry level packages.
Any of the main manufacturers have nice mid grade bolt rifles in short action.
From there, for the hunting mentioned, try a couple Leupold, Burris, and Nikon 1.5-5 compact scopes. A good shop will have a stock that they can set scopes in for you/her to try. those scopes would be fine for anything within 300 yards, liht weight, and small so they carry/handle easy.
Based on that, you(I mean SHE) could decide on the rifle, and if it "needs" anything.
As far as caliber, as someone else mentioned, pick one that you can find anywhere; 308 is one of those.... And... 308 ball ammo is cheap to plink/practice with. IF, you(I mean SHE) got one in 308, it could always be rebarreled or chamber reamed for a different short action round.
I picked two for my wife without her knowing; she had shot those models before and like them though. She really digs her TC Hawkin 50cal; she can shoot the chin hair off a gnat with it... the Marlin 1894C is about the same. She had shot both of those models before, and I knew SHE like them; both fir and caliber...