Yes girls are also gambling and I think its logical they are, why would they not, you even got some girls that are addicting to gambling so that is even pretty funny to be honest, right ?
yes there is no doubt about this that girls also do gambling, but their number is really too low as compare to men gamblers, i think it also depend on the area, in some area there is strong restriction for girls even to come out with their hose with out hejaab and only in a intense need, so there they even cannot think about gambling, while in other area girls can play gambling just like men.