Sounds normal to me! Mine does the exact same thing. Sleep/hide during the day, roam at night. Some nights she's more active than others (and is quite inactive the night after a meal or during shed), but what you describe sounds like normal BP behavior in my opinion.
Addition: As long as she's feeding, pooping, and shedding just fine - which it sounds like she is - I wouldn't worry about it. Good job being a good parent. =)
Thanks so much! I also wanted to say I love the pics of Gloria you have - my baby, Rhea, is a butter.