This is what happens with power dynamics being unbalanced and no laws or consequences that will protect these girls.
Islamically our religion limits the mixing of the two sexes and there is a great wisdom behind it. These cases are not just found in Somalia, similar cases known and hidden are found in even the west. When a non-mahram man in a power position has access to non-mahram women if he is sick enough he will try to get what he wants.
My mum used to tell me about working during the siyaad Barre era and how if a woman wanted to be promoted she had to sleep with her senior...even some government officials had mattresses in their offices
Women would be totally free from this if they had their own schools with female teachers/dugsi with female teachers...but with the workplace it can't be helped but there needs to be serious consequences for any man who tries to take advantage of a female...because at the end of the day everyone back home has daughters and sisters who they want to protect.