That "mother" actually tried to pull the mother act on her last time, but she only cared for her own wealth and status.
This time... things will end differently.
Ah, this explain why chapters ago the older brother accused Shulo from seeing other mans right after his father's death! She was doing it to avoid her mother
Besides taking care of children when she was also a child, she also need to put her family in check at all times, poor thing