Hellofreckles, don't fall into that trap that now you are contemplating what it will be like to have a perfect baby of your own, you start looking at all the faults in your SD.
Children, like adults are not machines. They come in all shape and forms with their own personalities and all, like us, will have some things about us that are great, and some annoying, it make us who you are.
So your SD is a very talkative child. She sounds exactly like my DD. My DD NEVER played on her own, even when she was a toddler, she needed and wanted interaction and was always asking a zillion questions and then talking for the sake of talking. Wherever we went, she had to be ahead of us, and then commenting on everything she saw before we ourselves even got there. Yes, it was annoying, yes she was a mentally demanding child.
However, these aspects of her personality has been very beneficial to her as she is about to go to study Medicine (grades permitting) and that is exactly the personality that they are looking for. She is full of mental energy, loves to be around people, curious about everything, and always has to keep herself occupied.
I also have a DS who I love just as much as her, but is completely different. He 'lives' in his room, always been quiet, won't say anything unless prompted, and well, very easy to forget about, except that as a parent, I am much more worried about him than my DD.
Your own child will have their own personality and you can be assured that some way along the line of their education, one teacher will find them annoying one way or the other.
Sorry for the essay, but it's been written so many times that once a SM is about/has just become a mum, she starts seeing their SC in a totally different way, focusing on the negative and forgetting about the positive. It's your perception that has changed, not the child and they don't have to change who they are to suit you. If you struggle with her at times and she annoys you, don't feel bad about it, just leave it to her dad to deal with her. Don't be fixed on the 'we'. You are a new unit, but in her mind, she seats between two and her own unit is her mum and dad.