Ana could be pronounced two ways and it would become different words based on the pronunciations:
Pronounced as UN(derstand) + (wom)A(n): This word means a woman who is patient, forbearing, and virtuous. It also means for someone to reach their full potential and maturity.
Pronounced as A(rm) + N + (wom)A(n): This word means time, as in "nighttime".
Both of these words are derived from words found in the Quran. Since the meanings are good you can use either of these names inshAllah.