I think how many years Paige plays depends on many things. NIL and other income opportunities is one factor. So is her interest in pursuing a masters degree. Then there is the quest for a national championship, and having more healthy years together with Azzi.
After her first year she seemed destined to be on the Uconn Mount Rushmore, perhaps joining Diana, Maya and Stewie. But they won more than one national championship. Her legacy can't reach that level if she doesn't get at least one, maybe two championships, and if two of four years were marred by injuries.
I think staying for her 5th year is pretty likely, to give her hopefully two full years playing with Azzi when both are healthy. Considering how much she was looking forward to three years playing with Azzi, having the first two ruined by injuries to both players, having them healthy for only one would be very disappointing. If we get a championship next year who knows, but if we don't I cant see paige leaving if she has another year available to pursue that goal.
Like fans of most teams, I would love to see her back for a 6th, but it is much harder to project that far out. If the masters degree means a lot to her who knows, but I feel pretty good about the chances of her playing one more year after the next one. The opportunity to play another year with Azzi is a big incentive IMO.