Final answer:
Erin's foster brother's name is not provided in the question. The question relates to the importance of keeping siblings together in foster care to help them navigate challenges and provide emotional support to each other.
Step-by-step explanation:
The name of Erin's foster brother is not provided in the context of the question. However, it is important to recognize that siblings in foster care, like brothers and sisters, can play a crucial role in providing each other with emotional support.
When they are placed into foster care or other non-parental care arrangements, agencies and foster families frequently strive to keep siblings together to maintain this important bond and offer a sense of stability in what can be a challenging time for the children involved.