Only thing i can think of is so she wont get the blame for it, and anyway seeing as she didn't take any that night and coke only lasts about 45 minutes until it wears off, its more likely alcohol was the cause. Why would max risk getting involved though dont understand it.Btw tonight was a very poor episode a whole scene based on michelle's mince pie? c'mon man.

He had handled the coke already before the bodies were found so he probably got rid so the police didn't take his prints from it and think he was involved in the deaths in any way

Think he was sparing her the posthumous embarassment personally.

It,s all got very depressing now, think i,ll give it a swerve for a while.