The only girl streamer I watch is annialis. She actually has gunskill and isn't plagued by thirsty 12 year olds. To actually be a successful girl streamer.. you actually have to be good or you have to flaunt yourself and be an attention seeker. Personally, I avoid the latter. It's not enjoyable to watch a girl be loud and show-off a little just to make a bunch of 12 year olds happy.
I promise if you follow a path of being a more serious... but chill gamer... you'll find more success in the long run.