I guess I have been lucky; my daughter had to be on a apnea monitor (not so lucky!)when she was born so she had to be in her crib all hooked up so she got used to sleeping on her own, and has always been a good sleeper. However, when was my son was born he wasnt on a monitor so we got used to rocking him to sleep and gently putting him in bed when he had been sleeping for a good hour! Not a good idea! Eventually, we realised that he would never sleep on his own if we didn't let him get used to falling asleep by himself so we tried the "ferber method" which worked okay, a long as you can harden yourself to not going in at the first sound of crying! I swear, I cried more than he did! We put on the tv with no sound so he wouldnt be scared and now he is sleeping by himself with no tv or nightlight and is doing great. The only thing is our son is still in a crib and your kids obviously are not, so I am not sure if this will help. But, you could try having a nighttime ritual where you read to the girls and settle them in bed, then maybe tell them you need to use the bathroom desperately and will be back in a few minutes if they promise to be good and stay in bed! Maybe if they think you need to go bad enough they will stay put long enough to fall asleep! And I definitely recommend a nightlight for when they wake up and are scared, and having a favorite toy or blankey that they can use instead of you. Also, when my son does wake up in the night I just quietly talk to him without going to him, if you stand outside the door and reassure them you are close by maybe they will be soothed enough to go back to sleep without you having to hold them for hours! I hope you find a way to deal with this now, as it will only get worse the older they get, but I know how hard it can be to make changes in something that is so familiar, to you and them both. My son actually enjoys going to bed by himself, he stretches out and gets comfy and gives me a sleepy smile and cuddles his blankey and is usually asleep within 10 minutes. And this from a child who took naps laying on my chest with me or Dad not moving for 2 hours in case we woke him up! We were completely at his mercy, sleepwise!(but he still has me wrapped around his little finger!) Good luck and let us know how it turns out.