Can you arrange a meetup on neutral grounds, just to see how they respond to one another?
I have taken in three rehomes, and I changed the names of all three. It's surprising how quickly they get used to a new name, it's not a problem at all.
__________________ Life is merrier with a Yorkshire Terrier! Jezebel  & Chuy ... RIP: Barkley  Loosie & Sassy  |