Why do we even bother with my step daughter's bio mom when it's obvious she doesn't care about her child?

Passing out may be a side effect of anemia but that doesn't make it okay. Does the bio mom realize that if her daughter's hemoglobin gets too low, she could die? More importantly, does she care? If it were my daughter, she would not be going to her mother's until a doctor and/or plan of care has been established.