What is our next step when we have kinship guardianship but the mom is now trying to terminate the orders?

We have had our granddaughter for the past 4 years in which the last 3 we have had legal kinship guardianship. The mom was hooked on meth and never, as long as I've known her, had a stable, decent home to live in. She disappeared after this and it has been 3+ years since any of us especially my granddaughter have seen her. All of a sudden we got served papers last night that she is wanting to terminate the no contact order. My granddaughter lost her daddy in January and is devastated and this will just be the icing on the cake. She doesn't remember her at all not even in pictures. What can we do at this point? We have to reply within 30 days what we want.