Welcome to the site Char. (that's my sisters name, Charmaine)
Everyone is nervous at some point, but afterwards almost everyone will tell you, that they wished they'd had it done years ago. Be glad instead that you will be able to participate in your daughters life so much more when you are slim, I missed out on doing so much with my kids when they were growing up. Whenever they were doing something physical I was looking after the coats and bags.
This really will be the best in the long term.