Hi Shannon,
I was having similar issues with my daughter. I wasn't reading her signs properly and putting her to bed before she was ready. I then started putting her down later and would leave her in her room until she went to sleep. Regardless of the tantrums she threw. Maybe even try taking her for a walk to wear her out a bit more before sleep time or even try to track down if she is behaving like this after something in particular in her diet. I have noticed that if my daughter has something like red jelly or tomato sauce she has night terrors and wakes up about 5 or 6 times through the night. there are heaps of different reasons she may not be sleeping but first rule of tough love is letting them cry themselves to sleep. I went to a sleep school in Rosebud to help me sort out day sleeps. if it's doing your head in to the point you need to have her sleep try book into one. they are a god sent. saved my sanity for sure. But then again depending on how old she is perhaps she is telling you in her own way that she is ready to stop napping or reduce them.
Just a few things i learnt. hope you figure it out soon.

~ Holly