Hi ... My answer is to take 'one-day-at-a-time', because if I look forward too far, the whole situation becomes much too over-whelming. While I do not think of a 60 year old lady as 'aging', my mother has had various cancers over the past seven years, starting from ovarian, along with various operations due to metastasizing, and will now remain 'terminally' rated. On Monday, we will visit the colon specialist and arrange another surgery.
We hired 'Merry Maids' to visit monthly, have calendars and charts to keep our lives in order, have the same cell-phone 'family' plan and talk daily (or more), and these past two-years her husband has finally been taking over day-to-day care. She lives at home still and plans to pass there, too. At year three, she had all her affairs taken care of and paid for, so her mind is at ease and we now know her wishes at the end.
I have friendly-relationships with her main medical 'team', keep copies of all records on-hand and have all the specialist phone numbers on speed-dial.