My wife has a 7-08 and does just fine with it using 140gr bullets and does just fine with it. I've got a 270 and typically use 130gr bullets...recoil on both are very similar. I believe she'll do just fine with the 270, but as others have said 243 or 260 are great lower recoiling rounds. Sounds like you got a keeper if she is out buying hunting rifles on her lunch break :)