that's why people never leave home without it, also known as narcan. she carries it with her lipstick. >> i never got a chance to tell him how sorry i was. >> for what? >> for not understanding his plight. >> reporter: for that she's an advocate for those fighting substance abuse. >> there does come a point where you sometimes wear down, but then you get back up and you fight. you're like, i am not going to let this win. i will fight till the day that i die to try to ensure that someone else's child doesn't die. i can't save all of them, but maybe one. >> reporter: rachel crane, cnn, louisville, kentucky. >> so many moms like those two on that couch. i've done a lot of deep dives on this issue, and it just keeps morphing. heroin is stronger. the medicine cabinet is a new