Welp, googling the series will give you many a spoiler.

The non-spoilerly cliff notes
-chronically ill housewife
-As a teen her family got in debt. Guy who put them in debt told them they could pay back him back by giving him her cause he was looking for a wife for his son
-So she got pulled from school for that
-The son in question
- The sister in law
-She's been married into this for 30 years ....
-AND THAT'S WITHOUT THE SPOILERS