There is a common theme among the trannies of trying to destroy or "be better than" normal women. Like, most won't say it outloud too often, but you can catch them slip up at times.

In this case, the reason for the action is not just to obtain it. Its to deprive this woman of it and wear it "better."

I used to date a hot/crazy chick who shoplifted for fun until her dumb ass got caught multiple times.

These mentally ill people shoplift for the rush it gives them to transgress the rules of society and victimize innocents for their own personal gain. It makes them feel like predators, not prey, powerful, not weak. It gives them a huge rush and ego boost.