We weren't sure how Sonny would feel about Drew since she's been an only "child" for so long but from the start, she has shown nothing but love for Drew. She's like his protector. When he cries, she goes to check on him and makes sure one of us is attending to him. Sonny has gone from a very spoiled dog to 2nd place and she's done very well!
Here is the video of Sonny meeting Drew when he came home from the hospital:
Also, here are some pictures of Drew's great protector: