RE: purchasing a bow for the Mrs.
When I bought my daughter a new bow, it didn't matter if the bow was designed for short-draw archers, or not. If she couldn't draw it comfortably, she wasn't going to get it. Some bows are designed with cams that are difficult for a women to draw smoothly.
Since she has a 27.5" draw length, power won't be an issue. Bows like the Ross that was mentioned, have round cams that are very smooth to draw. Women seem to like that, and tend to be more affected by "hard cams", than stronger men are.