Only advice I can give is to make sure your wife loves the feel of the rifle. My partner recently got into hunting and did a lot of her own research about which rifle she wanted. At the time, lightweight was one of her most important criteria, and a synthetic stock was also very important. She wanted to look at Tikka T3, Kimber Hunter, some sort of Savage, and I also suggested the Weatherby Camilla might be worth a look.
We went into a shop and had a heap of rifles thrown at us, including all of the above, and a couple of Howas and Brownings. She ended up going with a Mauser M18, purely because in her hands and on her shoulder, it felt better than any other rifle they let her try. This was interesting for me to observe as the things she liked about the feel weren't things I would normally think about, but being far smaller/weaker than me, she valued things like how easy the bolt was to lift, and how easy the magazine was to use.
She loves her M18 (in .243) and has killed 2 nice fallow bucks with it so far. No regrets from us.
Bottom line (as I mentioned before) is just make sure your wife is comfortable physically with whatever she buys.