send a letter to the state????

Hi, everyone. I have posted here before, but the situation is worse now. DH just found out he has an 8yo. daughter, she is here w/us in CA, biomom in IN. We are military, and IN says that DH has to put girl on page 2, fine, but mom won't send out a b.cert., and also sent her daughter here w/out a medical consent form, and several prescription inhalers. DH doesn't go back to court, in IN, no less, until Aug.30, and girl leaves Aug.7. Her mom has only called 1 time in 3 weeks to check on her, and hasn't talked to us at all. She is still collecting state ass., while girl is here,and I know we will have to pay that back. A friend told me to send a cert. letter to the state, and a copy to biomom, informing them that we have no b.cert., so as to give her daughter health care, etc., and if she got hurt, what would happen w/no consent form??? Should we write the letter to have a paper trail, and risk pissing mom off, and her attacking us in some way??
I read all the posts and know there are a few in our sit., and also know who responds, and any adivice will be taken into consideration, thank you, jessica/CA