What is her routine? She only doesn't want to sleep at 24months? It's important to follow a standard routine so that she can follow and know that she is suppose to sleep at certain time.
Why not you try to make a cozy environment, such as dim the lights and cooling environment..then carry ur kid on ur arms and move like like a cradle that is rocking.
No screen time if she does. Regulate her sleep by making a routine activity. Try searching toddler schedules for references.
Take away her nap time and slowly adjust it back