I think it's a great idea to do after you meet her. As a mommy and future teacher I think it's great to hear about little more about a child that will be in your classroom. Also, schools LOVE free labor!! I volunteered 2-3 days a week in my son's Kindergarten classroom and his teacher and I built a great relationship. She is a fb friend now! :-)
I think as long as you communicate that you want to be involved it will be welcome. In the past I think home and family were more separate from school, but now the new trend is more collaborative, which I LOVE. I'm always communicating that I want to be included in my son's education and part of the team.
Volunteering and attending school functions and making your face seen is a great way to be involved in the school. If you want to volunteer the teacher will inform you on any policies. I was an active volunteer and I had to register with the district office and go through a background check before I could work in the school as a volunteer.
I love that you're involved and I'm sure the teacher will too! :-)