Haines picked up the ball 30-yards out during a tense London derby and unleashed a sumptuous, curling effort into the top corner to leave the 'keeper with absolutely no chance.
"I’d just like to take this opportunity to thank those who voted for my goal for Goal of the Month," she said after winning the vote. "I’m really happy to have won the award.
"Thank you all for voting – and I hope to see you all at a game soon!”