If your daughter likes the Roam, the Roam 3 disc specs show a 30/46 crankset and 11x34 cassette, meaning the large cog on the back is 34 teeth, small chainring on front is 30--this would be good for climbing. The Giant Escape 2 disc has the same gearing, is a slightly different style of frame, might be another she could consider. You might find other brands in your area to try. Just remember for climbing, you want the smaller front chainring to be the same, or less, number of teeth than the large cog on the rear cassette.