DEAR ABBY: My 11-year-old grandson, “Lucas,” and I are very close. His mother (my daughter) allowed me to have him any time I wanted. I would even take him on vacation with me. When he was going into first grade, his mom informed me she was going into rehab, so he started living with me. Lucas is now in sixth grade and back living with his mom. My daughter has two other boys and lives with their father. Lucas’ dad is not in his life. I have always been there for him. She isn’t a bad mom, but Lucas doesn’t like living with her. My daughter now plans to move 40 minutes away and transfer Lucas to…