From the horses mouth , my friend who had the Malay girlfriend.
Quite simply she was missing a clitoris, and its very very very common.
Why are they doing that in Muslim countries if its not part of the religion?
And no a bit of "skin" as in fore - skin is not the same level of mutilation as losing a clitoris.
Its custom .... got no place here https://www.abc.net.au/news/2019-03-21/genital-mutilation-brisbane-woman-jailed/10924058