Original wording (Cantonese): "你一食葯就会食到老嘅啦“ (Once you start, you will need to continue till you get old (aka: till your death))
Oh okay mom… “唔食藥而家死咗就唔使到老囉” (If I don’t get medicated, I die now and no need to get old) (didn’t actually say it, but really want to)
This culture is gonna kill me 😭
She is probably just secretly jealous that you have a tool to help yourself that she didn’t.