I too read the article. SM has not visited either.
And, the SD was upset with SM as a teenager - something not at all uncommon.
I am sorry but when you continually unload on people telling them you do not want them in your life you are not allowed to just turn around and say, "ok I need you to come take care of me now."
As my dad would say, you need to dig your well before you are thirsty. If she had reached out two years ago and attempted a relationship then, that would be one thing. This just makes her look like a user.