By Lucy Marshall A new mum is fed up with her mother-in-law smoking around her baby – but she has been left in an awkward position after her husband says it “isn’t big deal”. It isn’t always easy to bite our tongues when it comes to the actions and opinions of our in-laws. But one woman has drawn the line after confessing her mother-in-law keeps “ducking out for a fag” then instantly picking up her two-month grandchild. The 39-year-old mum to the baby says she thinks her husband’s mother should wash her hands, face, and change her top before holding her child – she even suggested to put a scar…