I have found that when DD starts this (every so often we have blips--currently having one now as routine has been off--b/c of routine changes, lack of naps, visiting people, etc.) that being very matter of fact, giving her a choice, and letting her know how I will be handling things helps get us back on track quickest. Not sure if your DD is verbal or not, but you can probably do something similar to me if you go by her body language/behavior even if she is not that verbal. But if she is she can voice her choice. I have started saying "It's bedtime now, you can lay down and have mommy tuck you in all snuggled and cozy...or I can just stand you in the crib and leave." She has generally chosen to lay down and be tucked in properly. The reason for the "sterness" is that she is playing me. Suddenly at bedtime it's, "one more story" "hold me a little bit" " I'm hungry" "I'm thirsty" etc. etc. anything to stall. So by telling her that I will tuck her in the way I always do if she lays down.....or not if she doesn't....seems to have given some of the control back to me. Then I know that I can do a wi/wo if I HAVE to b/c I know she CAN lay herself down and get comfortable and fall asleep. (I can always sneak in later to check on her/tuck her in better once she's asleep).
So my thoughts are, first, right your routine so you know she's not UT or OT. Then once that's settled into place, TELL her that you aren't going to be staying with her forever before bed. It will be ONE story, ONE hug and into bed (or whatever YOUR bedtime routine ritual is) she can either choose to have it go smoothly or not so smoothly herself and you can do a wi/wo type thing if you have to.