S.E.
It does sound like it may be time for a toddler bed. Does she try to crawl out of her crib when she wakes up? Once a child crawls out of their crib it is time for a toddler bed for safety reasons.
She also may be at the stage where she does not need a nap anymore. My son was done with naps by the time he was 2 years old. Try a day without a nap, she should be more sleepy come bed time. Just a thought.
S.