You'll get lots of differing opinions and advice on what to do. Before I put in my two cents, I want to tell you to read everything first and then make a decision. Some people have surgery in mind from the very beginning, and others never take their baby in for it. I feel as though there is no right/wrong way to go about it.
Have you informed Tallulah's breeder of this finding? If I remember right, Tallulah is still a baby, and for her knee caps to be so free moving, my guess is the diagnosis is grade 3 or 4 LP. Am I right? From what I've read here, grades 3 and 4 are caused by bad genes, as compared to grade 1 or 2 which can be caused by a bad slip or fall. If she is as young as I think she is, the breeder should be made aware, if he/she didn't already know so he/she no longer breeds that breeding pair.
I have a baby with Grade 3/4 in both knees. My vets recommendation, surgery IMMEDIATELY. I went ahead and got 2 more opinions. The diagnosis was the same, but the recommendations were all different. After having had Kaji for a year, and really never seeing any signs of discomfort, I'm going to wait on surgery. He's 2 years old, runs, jumps, plays, and has never once favored either of his legs. He's a happy go lucky guy. I have read what discomfort grade 1 can cause to some of the YT babies, and I've been lucky enough never to experience that. I do keep a very close eye on his weight. If he gains half a pound more than his ideal weight, his knees pop in and out often. He is on glucosamine supplements, and is doing well. Except for currently his weight shot up because of what I was feeding him.
I'm waiting on rushing into surgery mostly because surgery has no guarantee. One of the other vets I went to go see told me that even with surgery, the knee can can slip out again. If Kaji was in immense pain, or if he even walked funny (I watch him walk A LOT) I would definitely be out searching for an orthopedic surgeon. But, he's fine. I'll save up money since no insurance will cover it anyway, and wait until my little man is no longer able to be his happy self before putting him through surgery.