We had Daizy for about a year....and then several months ago we got Tulip...and it was the BEST decision we ever made!!! They are sooooooooooo happy together....I can't believe we waited as long as we did to get our second!!! Yorkies are very social little creatures....and our Daizy seems much more happy since we brought Tulip into our home!!! There was the usual couple weeks of adjustment period....but now they adore each other!!
Good luck!! Let us know what you decide!!! Hope you go for it!!!