<span>Child support for one
child, 20% of the income of the non custodial parent should be given as support
for the kid. Support for two kids would be 25% of the income of the non
custodial parent. Child support should be given continuously to the parent who
is taking the kids custody. </span>
What you could do is sit her down and talk to her and also tell a trusted adult.<span>Tell her you're concerned for her, and offer support by suggesting specific ways to help her stop using drugs. </span>