I have an almost 2 year old desert tortoise I got from a friend who had 2, they were brother and sister. We got LaLa her name, 3 weeks ago. We built a aburrow for her, laid grass, and plaanted her natural food resources. We use to see her everyday, now we havent seen her in 6 going on 7 days. We know she hasnt left her burrow, cause we check everyday to see if she leaves trail marks when exiting. Is this normal, do we need to dig up the burrow to see if she is ok? We live in las vegas, nv and it has been in the low 80s during the day, and about low 60s at night.