The only thing I could think of to do is probably something that would cause more trouble than be good but I'll say it anyways

Everytime she comes to you when you call her, give her some small treat. A tiny piece of meat or whatever, anything will due as long as she likes it. When you've done that plenty of times she'll associate coming to you when you call her with food.

Well, that's the only thing I can think of atleast. I know it's a dumb idea and it could probably be unhealthy as well, so sorry! >_<