Hi S.,
Don't kick yourself too hard -- you're certainly not alone in this particular struggle. Your daughter is old enough to sit down with and explain that you're going to have some new rules. You can let her know that you love her snuggles, but that it's very important for you and Daddy to also have time together because you love his snuggles too. They can understand that at this age, and it gives kids a sense of security knowing that their parents love one another. This way you can prep her a little bit, because the only approach I know of that works is as the last post said: cold turkey. I'm a mom of 6, soon to be 7, and we've had to do this quite a few times over the years, most recently just last week with our 4-year-old, in almost the same situation. My trusty "sleep bible" is "Healthy Sleep Habits, Happy Child," by Dr. Marc Weissbluth, and here is his approach to this issue at this age: before bed, you review the new sleep rules with her: 1. Stay in bed. 2. Close your eyes. 3. Stay very quiet. 4. Go to sleep. For my son I added one, because he went to bed fine, but came up in the middle of every night. 5. If you wake up in the night, stay in your bed and go back to sleep. Then we promised him a reward if he stayed in his bed all night. It can be a little gift, a favorite breakfast, whatever will motivate. That's the easy part. The hard part is what follows. They will try repeatedly, with tears and drama, to come into your bed all night long, to test the new rules. Each time, you have to take them by the hand, with no talking, and no eye contact, and quietly walk them back to bed. They are looking for a reaction. Do not give any reaction. With our son, it took three nights. It may take longer depending on how ingrained the habit is. We actually ended up closing our door, which was enough to send our son back down to bed without us having to take him. He did this several times, but the third night he stayed in bed all night. But the carrying on is almost unbearable at first, so you have to hang tough. What we've noticed though, is when they get it, they are so proud of themselves for being a big kid. Good luck.