“There is another word that sounds like Manha (spelled as منحى) and it means “path”, “road”. For more information on this one see this answer: Meaning and pronounciation of manha”
Manha Hasan (the second Manha which means gift from Allah) and Ibtihal Hasan are good and acceptable names for Muslim girls.
Could you explain you have given two different meaning for the same name Manha?