A recent study from The Pew Charitable Trusts found that 2.9 million children were living with their grandparents. This number is likely to increase as a consequence of the current opioid crisis.As more parents become unable or unwilling to care for their children, grandparents are increasingly filling this void.Grandparents also adopt their grandchildren to formalize this practical reality and to eliminate any custody disputes with the parents. But what rights do non-adoptive grandparents have to see their grandchildren …