Melrick, I'm so very sorry. There really aren't words that make this easier, and I agree with that nurse. Cancer is pure evil.
My father in law slipped away on us after lunch one day. He laid down for a nap in the nursing home where we had placed him after air ambulancing him up to New York to save him from the misfits in Florida who were trying to kill him with neglect and misdiagnosis. My father in law had been improving, or so we thought, until I got the call from the home and had to call my husband at work. We visited him daily for the ten weeks we had him here, and we could only console ourselves with the knowledge that he knew that we loved him dearly.
My thoughts and prayers are with you and your family.