For the price the Maddog bows cannot be beat. I would highly recommend a Shrew also which can be had in lengths as short as 52 inches and with many options including a Bow Bolt to make a two piece bow, foam cores, carbon backing, exotic hardwood limb veneers and risers, stag limb tips and riser overlays, etc. You can make them as high tech and pretty as you want, but they cost more and there is a year wait. For more money still, I really like the Morrison bows. With the short risers (especially the ILF Mini-14) you can get a short bow for a woman if a short length is part of what you are looking for.
These are just a few good bows. There are many more that would work well, including all the bows others have mentioned. I know your wife will enjoy any nice bow you get for her.
Allan