Looks fine to me. Clothing matching time period is not something I would stress over too much. Perhaps the rim of the hat is a little modern. You could imagine away the rim of the hat if you really wanted to be nit picky. The only other thing is the metal symbol on her hat is a bit modern for the what I believed officer symbols looked like at the time, but I haven't done my research there. It could be imagined differently if you like, but I wouldn't fault you for wanting to keep it.