I know she has pooped in the last 24 hours since I changed the litterbox. My daughter fed them 12 hours ago (they get fed twice a day in addition to unlimited hay). I just asked her now, and she is saying that Magic didnt come out to eat at that time either. I will try the tummy rubs now.

Update on Magic.
I took her to the vet this morning. He took abdominal xray and said she has SEVERE intestinal blockage. He said her stomach is severely distended, and there is stool and gas in her intestins. She received subcutaneous hydration and antibiotics. They offered us to keep her for one day, but it was going to cost over $300, and the vet agreed to send her home with meds. We picked her up at 4pm, and she already started eating hay and drinking water. I am glad I didnt push oral fluids because as it turned out her stomach was so distended. The vet said it is because she was not receiving enough fiber in her diet. Although she always had unlimited amount of hay, he said rabbits often chose to eat pellets instead, and pellets do not provide enough fiber. Now she is not allowed to eat anything except for the hay and water for 1 week. She is also taking antibiotic to bring intestinal flora back to balance. I will post some more later, because I am on my break at work. Thank you everybody for your concern and support