Options:

1) Remove front wheel , pedals, and handlebars. Place under your bed.

2) Buy a wall rack and lock it up there.

3) Get a Pitbull dog and start locking your bike and dog up together overnight, in the garage....Meanwhile, buy her shoes and stuff.

* You must train your Pit to bark at the slightest indication of a tresspass. The dog must also be trained not to take food from strangers. Don't let anyone pet your dog, but you.