I am staggered you are on here asking if she is "Breaking the Law" for smoking in her own house.
What ever happened to nipping round next door and telling here about the smell and can she open a window.
You say you dont get on with many of the neighbors !!
Try that strange old fasioned comunication system , Talking
I smoked for years and stopped 6 years ago now so you would think i would be all for banning smoking, but i am not as ,all the protest groups , all the do gooders , all the health groups have nothing to do now and just you watch what pleasure will be in there sights next!
Pubs will all be gone in 20 years , no drinking in public , all confined to your own house with the stigma accociated with smoking now.
These days if you smoke , drink , drive (and 99% on here will drive) or fly abroad for a holiday you are made to feel an outcast so were will it all stop ,, sadly it will not as the ball is now rolling towards eutopia where life is so boring an early exit is the prefered option.