I picked Love and have never regretted it. Careers come and go and are somewhat easily replaceable. A spouse and a relationship like the ones I have aren't. BUT, would not necessarily recommend to a friend because each case is unique.
Are you sure she is a kleptomaniac? if she is, I think she should consult a health care professional so she can have the appropriate treatment. to be honest, confronting your friend is the hardest part, but if you are really close then you should talk to her about it.