Plant a nice shrub rose. The thorns will slow her down. Don't bother with tea roses...they are too difficult to grow.
Bitter sprays work too. This is the one I use...http://www.amazon.com/NaturVet-Bitter-Yuck-Spray-Ounce/dp/B000EHXD6M/ref=cm_cr_pr_product_top?ie=UTF8
I got mine from PetCo.