Where did Buddha state "Mother is the Buddha of the home?"
I am only aware of the suttas stating: 


  Mother and father are called
  "Brahma," "early teachers"
  And "worthy of veneration,"
  Being compassionate towards
  Their family of children.
  
  Iti 109
  
  
  
  A wife as the West be ministered to by a husband by...handing over authority to her...
  
  DN 31
  
  


DN 31 also states:


  (iv) she protects what he brings, (v) she is skilled and industrious in discharging her duties.
  
  


The wife has authority in the home when she is financially prudent, like my mother. But many women of the current 'feminist sexual liberal era' lack financial prudence. Instead of saving money, they spend money. Only individuals with morality can be the authority of the home.