Tashi and Laila, The Deal

Laila wants Tashi, her step mum, to quit but Tashi  is resisting. She makes a deal —If  Laila learns to smoke and smokes 2 packs and quits Tashi will quit also.  Laila is confident that she wont have any trouble quitting, so she agrees. Tashi isnt worried.  Laila is becoming a smoker.