"My mother constantly yells at me when I tell her double negatives are horrid. If she knew the word, she might call me a pedant. 'You know what I mean, all the same. Just shut up!'"

Ouch!
"...constantly yells at me when I tell her double negatives are horrid." Then stop saying that within her hearing. And consider that you are opting for your version of English and ignoring the musicality of American regional speech and the wonderous aptness of many social dialects.

If she knew the word, she might call me a pedant.
Mercy! Surely you don't really intend to demean your Mother's intelligence. After all, she probably provided your first exposure to speech and language.