Congratulations on completing your novel, as others have said, this in itself is a major achievement.
Agree with others, a lot of back story and not much happens until the uncle gets his snuff box out.
I am intrigued to know where the uncle has gone, but it took a while to get to this point.
My manuscripts first chapter had exactly the same issues. Too much background, head hopping, telling not showing, not enough action. But it is all fixable.
Is your main character, (Connie 10 years of age) too young for your target audience of 10-13+. ? Would a 13+ Want to read about a 10 year old?
Time to start editing, good luck with your manuscript.