[Kasey]

I have noticed and also read that at the 2 yr home point, many kids feel comfortable enough to start challenging their parents and exerting more of their own will.
Have you asked her why she is sad or angry at bed?
For our oldest, around 3-31/2 we also went thru a change in bedtime, more tears, and alot more finding many excuses to delay and get out of bed. We co-slept alot, but had transitioned him to his own room and it had gone well for a while and then it started up. We took turns lying with him, rubbing his back. We also would put up 3 post it notes (like tickets) by his bed. Those were his 3 tickets to get out of bed to get a drink, go the bathroom, get a book, all those things he kept coming up with to delay bedtime. It gave him some control while setting limits, so that seemed to help. He is now 4 1/2 and there are still some nights he needs one of us to lay down with him, but they are few and far between. Our 3 yr old (home 2 yrs in Nov) now is starting with bedtime battles amongst some other battles now, so we are trying to figure out what works for him.
Best wishes!!!