That said, it's pretty darn cruel to walk out on the kids and not to even let them know she was alive.
Great advice.
Something snapped; mother’s typically are not wired to walk away from their children.
The daughter’s reaction may be understandable, but that is her mother and with a bit more maturity she may realize how important it is for her to know her mother and even to find the courage to forgive her.
And the clock is working against such a possibility.