Oh how funny!
I guess you have an Official Climber on your hands. Good luck. The next thing you know you will find her in all sorts of "no dog zones" -- the kitchen table, the counter, etc. etc. Now you will have to Yorkie Proof HIGH PLACES as well as Yorkie level places.
My little Chizzie can CLEAR my 23" baby gate. Geez!!! she should try out for the olympic high jump!