2003 XB9S charging issue

[RedDevilWheezy]

My girl has a 2003 XB9S that has been sitting a most of its life (only 3100 miles currently). About a year ago she had it serviced at the local dealership because it wouldn't start and she can't remember what they fixed. Bike ran for a day and then died on her and has been sitting in the garage ever since.

Last weekend I picked up an 1125r and decided it was time to get her bike running again. Bought a new battery and the bike immediately fired up. She rode it around the neighborhood for about 10-15 minutes and parked it. When I went to start the bike a few minutes later the battery is dead, the bike tried to turn over once, when I hit the starter a second time there was no noise at all.

Would a bad stator kill the battery that quickly? Or is there something else I should be looking at? At a loss here and would love to get this thing going again for her.