Best way to lose weight would be to reduce what she already eats and increase her exercise. That's been my experience anyway. I agree with Deb, feed them separately in different rooms, and no food down. It's far too much temptation. Yorkies are just like people, some have self control, some don't. My yorkie will eat everything in front of him.
__________________ Littlest JakJak 
We miss you Kaji 
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