Need urgent help regarding F4 Category adoption

[Sam200]

My uncle is sponsored under F4 category. He has a family of five which includes his wife, two children and an adopted daughter. The adopted daughter was adopted in 2012 when she was at age 12 and has been living with my uncle for 6 years. My uncle had his interview yesterday but the adopted daughter got her visa refused. Interviewer told that there are no proper laws for adoption in Pakistan so they can't consider her for visa.
Now, we are really in a desperate situation as she is an orphan and there is no one to look after her in Pakistan. Could someone please help me in this regard?

Thanks in advance.