i had two rabbits (7 years old) and I've had them since they were babies, and they were brother and sister and they lived together. They lived indoors with us and we loved them very much. Overnight, one died suddenly, and we are not really sure why. They loved each other so much and were always together. I'm worried that now one of them is gone, the other one will die from a broken heart. every time i checked on her today, the fur around her eyes was wet almost like she had been crying. she ate a little bit this morning but not a lot. I'm really concerned.