Was the sentence of 50 years in jail too severe?

                   Heroin mum jailed in Bangkok

I think yes because it's :
hard punishment and too much ,affects the whole family,small quantity and the children will suffer
ON THE ANOTHER HANDS:
 dangerous for other people,other young people could suffer,good lesson for respecting the law and this is bad example for society
 But the children will forget mum and they growing up without one parent . they will be ashamed. they will not be proud of their mum