Proper, the English cognate, should be acceptable here.
false cognate. proper and clean are not the same
What is the word for "neat"?
Propre would also be acceptable. Another synonym is soigné.
Why you say «La femme est propre»?
To say "She is a gentlewoman" ?
Bon! I think all women must be gentle otherwise they are not women in femininity meaning, the are female in term of gender.