Toddler sleep trouble

Hello, I have a 2.5 year old daughter that was a FANTASTIC sleeper from birth until 5 months when she started teething and was bad until she stopped at 18 months. She slept great for a few months until she turned 2 and got her 2 year molars. And then she started almost nightly waking up multiple times a night crying fussing kicking screaming. It can last from hours to minutes. Sometimes she is in raged and sometimes she will fall right back asleep. She has no medical issues. We striclty follow chiropractic and natural medicine. She has never had any medicinal formula, no vaccinations ect. We have gotten her on a good schedule which has helped but it hasn't supsided so we have also tried chamomile teas, calm's forte, proper diet. Nothing works she is really active as well and takes a 2 hour nap daily with no problem, falls asleep within 10 minutes. But night time is such a struggle she will fight for an hour or more and finally sleep from 9-6 or 7 usally. I am sure we are not doing everything perfectly (who does) but I truly in my heart know her and I feel like she needs a little help along at night. I don't feel like it's normal to be crying out and whining the way she does every night. I don't want to turn to medicine ie. melatonin ect. I won't do that. Any help would be appreciated.