Oh, how I remember those sleepless nights! Where does your little girl sleep? Where is your other yorkie sleeping?
I kept mine in crates in my room and would get up 1-2 times a night to let them go potty and of course they were wide awake and would want to play
I'd just put them back in their crates with a safe and 'quiet' toy and eventually they would settle down.
Hang in there - just when you think you'll die of sleep-deprivation she will start sleeping through the night
