I thank you for your responses. SonataInFSharp, I would love to buy her a hybrid but she loves the cruiser look. I think mountain/hybrid is what she needs but all she cares about is color and style. I know if she finds the right bike she will live the trails like me and the kids.
Funny thing is my 17 year old has a huffy cruiser too but loves the scenic trails so much she doesn't complain despite the difficulty of going uphills.