Mica is ok, but it looks too close to the male name
Micah to me. Also, I don't know if it is pronounced as MEE-ka or as MY-ka.
I'd prefer another female form of
Michael, like
Michelle or
Michaela.
"You sought a flower and found a fruit. You sought a spring and found a sea. You sought a woman and found a soul. You are disappointed."
"It does not become me to make myself smaller than I am." (
Edith Södergran 1891-1923)