Den Mother 

the adult female Leader of a group of female children or teenagers. usually the group of children or teenagers are cub scouts of some form.

“camp is gonna be fine kids, it’s not like your gonna be out there all alone! Den Mother Abigail is gonna be right there the whole time!”

Den Mother by Gotta do everything myself April 21, 2022

desmother 

'desmadre'' for pochos or mexican-american people.

We made a desmother here!

desmother by Alons June 6, 2012

demotherize 

to remove the role of mother upon their child, typically due to fear of an image of their face

trinity: is that our mum or just another middle aged white woman?
thomas: nope, just a stranger
thomas: if it was her i’d be scared
trinity: yeah my dudebrofam id demotherize her

demotherize by tee limmie April 8, 2019