sleeping in a hospital bed

I drove to the hospital after work. They did an ultrasound and a CT because of a pain in my mom's leg. The doctors are being cautious about blood clots since my grandma and I have both had them. My dad will have to give my mom blood thinning shots for 4 weeks after she comes home. The tests came back negative for blood clots. We think a nerve was inflamed during surgery, causing the pain she feels now. I am going to sleep at the hospital tonight so my dad can go home to see the kiddos and sleep in his own bed. My mom is groggy from all the drugs, but she doesn't have pain anywhere other than her leg.