I'm pleased for you that your mother supports you. The bond between a mother and child is a strong as one can get.
I read a fascinating piece by a scientist who had a theory about molecules and such and the physical connection between mothers and children that never goes away.
My mum was like a tigress when her kids were threatened. I loved it as I have 2 brothers..fairly stitched up types, and 1 deceased one who was a real villian and rogue who always had lots of money but never had a job.
But he was always an angel in his mum's eyes.!