She has been using on and off since age 19, she is now 26, I just wonder when will I have had enough, when will I get the strength to kick her out?

A friend told me today about her son, she kicked him out when he didn't work, was out doing drugs till all hours, she said she would of "rather seen him six feet under than to watch him live the way he was living" I just keep thinking of that all day...