We really have no luck here. Today the kid came home to Estelle being lifeless. We rushed her to the clinic, but there was nothing to be done for her. She apparently had a big tumour in her belly, and the vet told us that while she could attempt invasive procedures, it was very unlikely that she would survive it, so we decided to let her go. We buried her next to her little sister. Damn, I know that nature never intended for small rodents to live long lives, but it hurts every time.