Grandparents Raising Children Support Group
This community is dedicated to grandparents who are the primary caregivers of their grandchildren. In cases where the parents are not willing or able to provide adequate care for their children, grandparents may take on the role of primary caregivers. Join the support group to find support, share your experience, and get advice from other members.
Good Luck!
Also make sure you are documenting all visits: what happens, how the kids react, what she does during the visit. Document all other contact you have with her as well. This can make a significant difference in the long run, especially if she doesn't make every visit she can have, cuts them short or is not focused on the kids when she is there. I have custody and do this all the time just in case either of the bios ever tries to gain custody back. They will be damned in court by their own actions and lack thereof.