I too had an experience 2 years ago that lasted way too long, close to a year. The only reason I held off so long was because my heart went out to her mom who was on her own. She had an adorable 8 month old that spent 1 week with mom and 1 week with dad. When she was with mom, she came to me, the week with dad, grandma would watch her. At first I thought she needed time to transition. She ate and slept for me just fine, every other time she would cry, wanted to be held and it only got worse. I would talk to the mom and we couldn't figure it out. I would just ignore it, but it got to a point where I couldn't handle it anymore. The crying got louder and as the months went by she started hitting the other kids, she would only be happy if i had her on my lap and paid attention to her. Once I walked a foot away the crying would start. The following week with grandma would be fine! When her week would come for me to watch her, my mood would just go downhill, I couldn't do crafts or even enjoy my other kids. It got really bad. I than decided I needed to terminate. Mom was a mess, but I was loosing my mind. The only conclusion I came up with was she didn't want to have other children with her. She needed a 1 on 1 environment. Mom finally found someone to watch her and only her. From what I know she was doing well with this lady, whom I don't think was even into daycare, but it broke my heart that when they left, mom just stopped talking to me. I felt so used !!!