I do not think this is accurate. While she does provide them with support, the article states that they actually need very little. She's saving a lot more than what's needed to support them.
I scrolled through the whole article but aside from loads of background story, I didn't find anything else. What did I miss?
They need her to buy them a house. That's not needing a little.
Buy a house, or rent for 10-15 years of the rest of their lives?