Both answers given here are great and will work. The only thing I would ad is that you display different behavior at night, show little emotion and point you littun back to bed and look at the clock when she kicks up a stink. She will make appear to go forever when she cries but look at your clock and see if you can hold out for  mins before you go in and point her back to bed. A few nights of this will help her understand that rest time is different to play time and this will not change nomatter what she tries.

Goodluck.

Hi,

I noticed that you said you let her pick a movie to watch when she goes to bed. It could be that as she is getting older, she is finding the flickering lights and action on the screen too stimulating to allow her to go to sleep. Maybe try a different bedtime routine. Give her a warm bath. Lay down with her and read some stories. give her a warm drink of milk. Brush her teeth, take her for a wee then lay down next to her and sing some songs. Tell her then it is time for sleep and you will see her in the morning. Try putting some classical music on a low volume in her room - I found this helped my cherub! There was one piece that she liked and i just stuck it on repeat! I just turn it off when I go to bed. Think of something to say that will indicate it is sleep time. My little one likes "night night don't let the bed bugs bite! "I give her a kiss and cuddle and sometimes she asks me to pat her back. I will do this for a minute then say goodnight and walk out. If she calls out or gets up, I firmly tell her it is bedtime and she has to go to bed  and take her back to her room- there is no more "nice stuff" like songs or stories. If they get out of routine and start hopping up again...just be firm. It's bedtime, go to bed. Don't discuss anything, don't raise your voice, just be firm and consistant!

Good luck!

Tell her in a very serious and firm voice (just off cross) that it is her bed time, that she is to stay in bed until Mummy gets her in the morning and thats that.  She is well old enough to understand.  If and when she gets out or crys you ignore her take her hand don't look at her put her back to bed and leave, the less interaction you have the better as any kind of attention is just going to encourage naughty behaviour.  You are the parent and you YOU set the rules, it might take 2 nights but after that you will find bed time a breeze, 2 nights of hard sometimes heart tugging work, but beign a Mum isn't all flowers and kisses, we all know that, this part is up there with the brown nappies and the vomit, so just put it down to something you HAVE to do for you and her and set your determination onto HIGH and go for it... it's the only way unless you want to drug her with phenergon and thats is NOT recommended.

Good Luck, I have had to do this with our daughter on and off for ever, she is now 2.5 and we're on day 2 of yet another cycle, but 2 nights fixes it until something puts her out of whack again, she's just been ill so thats the reason this time.

Try and avoid sleeping with you unless she's ill, thats the only time our daughters in with me and as a result it's a treat, & helps just in that way to making her feel better when she's ill, it's not something expected.

Good Luck and be a tough Mum, she'll just love normal mum all the more when morning comes trust me, 2 year olds don't know the meaning of holding a grudge