If you're in the US... Pregnancy/giving birth does not emancipate a minor, so yes, you are still responsible for child support (but only for her, not for her child of course--the responsibility for child support for her child belongs to that child's father).
Yes, unless the child is adopted.
Yes, child support continues until the age of majority, regardless of the child's high school standing.
Yes, as part of a legal separation.
no
no, however any arrears are still owed.
Yes unless this child is sent away in some rehab
Yes. The support will be redirected to the State as reimbursement.
Yes, it does not matter where the child lives, you still have to pay it. The child does not stop being yours just because he/she lives in another state.
Currently, nothing specific. After all, the parent paying child support is still the child's parent and obligated to support her. Only five states specifically take it into consideration.
Yes, until/unless the child is adopted.
Child support should go towards support of the child, such as: diapers, clothing, food, medicine, furniture, toys, entertainment and so on. Child support is simply a non-custodial parent's financial share of supporting a child that they would normally spend if they were still in the home. It is not a penalty. It is a responsibility.
Yes. They are still the child's parent and responsible for supporting their child.