Saying Goodbye

My father had to have my dog Lucky a.k.a. Laquita put down today. She was a West Highland Terrier. She would have been 15 on June 19th. She was Mia's (my teacup chihuahua) only friend. I am just wondering how Mia will adjust to not having Lucky around. It really sucks. The end to a perfect weekend I guess? I will miss her.