At first he would run around

and i would get up and try and grab him and used to think it was game now i say go to bed although he sits there and looks at me like what

so i just go to bed and watch tv and after a good 5 minutes of walking around he finally goes to bed i wait till he's curled up to cover him if not forget it he would think i was playing with him and try and nip at my hand.
Give your baby time since she is getting used to it she will know that when you go to bed it's time for bed too

. Ohh another thing i do is when i get home from work i put all his toys away so make sure her toys are put away so she wont have anything to play with.
Good Luck let us know how it goes