When your mum has just discovered that the paint stains - that you carelessly made on the 5-day old lino in the new rental kitchen, because you did "not hear" her advice about putting some paper under your painting - won't come off with water and soap, "Whose fault is it?" is most definitely the wrong question to ask. "Will I ever get pocket money again?" or even "Will I live to see my 6th birthday?" are probably more apt questions in this situation. Though the wisest option would probably be to stay well clear of your frantically panicking next of kin until her blood pressure has come down considerably.
I wonder if the smell of tea-tree oil - which turned out to be the miracle cleaning aid that saved mum's sanity - will forever make this memory surface for her now?