Good thing, snakes tend to get dehydrated easily. Shipping is notorious for dehydrating your animals, and offering them water is the FIRST thing I do when I unbox a new acquisition. You didn't mention where your animal came from, so if it wasn't shipped and you picked it up locally from a shop or elsewhere, she could have been dehydrated anyways because of living conditions.

I don't keep track of how many times each of my snakes pees, but twice in the first week is not anything to be concerned about. All of my snakes tend to urinate more often than they defecate. If it tends to be very often over a longer timeframe then it might be unusual.