Grief

How do you all handle grief with your rats? Im struggling right now because all of mine are around the same age (1 year 11 months and 1 year 9 months) and ive lost 5 in less than two months with putting down one yesterday and then waking up to another one dead this morning from CHF. He was rushed to the same vet yesterday and got some lasix and some meds but it didn't seem to work. I was just wondering how other people handled it. I still have 8/14 girls and 6/10 boys they're all siblings/related.