Van Der Merwe crossed twice for Scotland as they snatched a third successive win over England.
The Manchester United boss said Jordan Ayew should have been sent off too.
Taylor beat Serrano via a split decision in the first women’s contest to top the bill at Madison Square Garden last April.
Most of the Everton players were back inside the dressing room, enjoying the unfamiliar taste of victory, but Amadou Onana was only at the start of his personal lap of honour.