I confirmed with EE that as of yet there isn't support for pagnation in a parent relationships.
Was wondering if anyone else encountered this issue and what solutions you've employed to get around it?
ExpressionEngine® Answers is a question and answer site for administrators, end users, developers and designers for ExpressionEngine® CMS. It only takes a minute to sign up.Sign up to join this community
Check out Better Pagination by Bold Minded/Brian Litzinger.
You should be able to achieve what you need using the limit and offset parameters with that add-on.