Hello, They both mean the same, while using a noun in the first sentence and a verb ( or a noun ) in the second one . "Dancing" could be a noun as well. It is a verbal noun formed by adding "ing" to the verb 'dance' Danc(e) + ING Danc I ng " I can't wait to see her dancing". means you can't wait to see her act of dancing, to see her perform the dance . The sentence uses a verb ( or a noun ) here. " I can't wait to see her dance" You can't wait to see the performance of dance itself. It is using the noun "dance".

it means the same.Just the minor difference in tense,