[yorkie mad]

As some of you know Tia my 9mth yorkie baby has recently lost her big sister jessie (border collie) and Im beggining to feel guilty that her friend is not here anymore. Since Jessies passing which was 4 days ago Ive been offered a puppy poodle and yes another yorkie baby but Im not interested.Can Tia be happy being an only baby?She gets mega attention it goes something like this:every morning before work I play ball with her.I come home for lunch we play.At 3 when I finish work we go to the local field for about 45 min.Wed eve we go puppy classes.Sat afternoon she plays with my sisters 3 dogs in the field.Sundays she goes walkies with me and hubby. I know how wonderful it can be for them to have a playmate but would I be a poor replacement? Is there anyone also with an only furbaby and content?