yep, She's around 8-9 wks right? I would be taking her out every hour or so when your home during the day, right after waking up, and after meals.
At nite, I'm assuming your crating? Last time out is late as possible, and then early as possible. At this age, they just can't hold it yet.
And definately reward for "good potty",,and you might even when you take her out, use a phrase/command such as "go potty"..In the end, You can teach a dog to "go" on command if you choose. Always reward for the good behaviors whether you ask for them or not.
diane