DCS Adopt/they didn't TPR & allow us adopt thru them

We obtained physical custody of our great niece, a severe abuse baby. Were told that AFTER the "severe abuse finding" that the state would TPR & we could adopt baby after becoming a "foster home." We got physicals, had physicals for our three children, TB tests, prepared the house according to foster care qualities, signed up for PATH classes, arranged babysitters, etc, then when the judge gave the decision, she did NOT TPR, even though it was declared severe abuse against mom, and dependency neglect against dad. She gave us custody, but now in order to adopt we will have to spend thousands on attorneys fees to TPR and to adopt her. She also has a type of minor spina bifida, and is " severe abuse child" & would "usually" qualify for an adoption subsidy, I'm told. We don't even care about the subsidy, however she could get social security benefits because my husband is retired, but ONLY if she's adopted by us. Is there anything we can do? This child is less than one yr. old, and the parents still get visitation that we have to supervise once monthly. We were shocked! Can't believe it turned out like this. Can anyone suggest what we might do?