What is 'adopt as care dependent'?

This happened to me too. Before the mother, Anabell, was pregnant, she had a best friend that she lived with, Vanessa. The Anabell and the father, Travis, split up when the toddler, Viola, was born. He left them both. I was playing and it gave Vanessa the open to be the caretaker of Viola. I clicked on it and the notification said this; “Vanessa is now the caregiver of Viola. This means she will check on the toddlers needs on a regular basis.” Hope I helped :)