First, I would like to say that you are doing an excellent job homeschooling. The fact that your daughter can read at a 1st-2nd grade level is fantastic! Developing good reading skills is crucial, and that is exactly what you have done. Great Job!
As for place values, you really don’t have to worry about those yet. In fact, we don’t start doing place values until the child starts working with larger numbers (e.g. adding 3 digit numbers together).
While you’re waiting, you could teach her numbers, addition, subtraction, and maybe even her times tables! Above all, however, it is crucial to instill in your daughter a love for learning: make sure you never frustrate her and always encourage her. As long as you make it fun, you’ll see that your daughter will love both math and learning in general.
If the curriculum you’re using isn’t working out, you could either modify it as you go, OR you could just stop using it altogether. She is after all only four, and there really is no need to follow a rigid curriculum at this age (actually, there
never is a need for rigid curricula when you homeschool!
) Of course, If you really are determined to teach her place values, you probably could: just make sure it’s both refreshing and fun!
Hope this helps, and God bless!