The goalkeeper collected the prize at the team’s training base at Solar Campus having been selected by manager Vicky Jepson.
Preuss figured in all four of the Reds’ fixtures during September and was in excellent form despite a tough start to the season collectively.
“It’s always really nice to be recognised for your individual performance so I’m really pleased to receive the award but, of course, for me everything is about the team,” said the 27-year-old.
Defeats against Reading, Tottenham Hotspur and Manchester United in the Women’s Super League, and a Continental Tyres Cup loss at the hands of Sheffield United, made for a difficult beginning to the new campaign.