Legal Question in Family Law in Maryland

Her husband's income will not be taken into consideration by the court. However, if she has voluntarily chosen to quit her job, you may be able to show that she is voluntarily impoverishing herself for child support purposes. Child support is based on gross incomes, so your husband's contributions to the mortgage and/or utility bills would not be relevant.

In determining the appropriate amount of child support to which a child is entitled, the court can consider the respective incomes of the parents, not stepparents. In the case of your husband's ex, if she is capable of working based on her training or experience, the court can treat her as being "voluntarily impoverished", and can impute an amount of income to her that she could be making if working. That amount, combined with your husband's income, will determine the base amount of statutory support due. As for medical expenses, if they are necessary for the child's health and not covered by insurance, it doesn't matter whether your husband was consulted. Presumably he would not have deprived his child of necessary medical treatment. In the final analysis, the mother must show a material change in circumstances from when the current order went into effect in order to be entitled to a modification. So if these current medical expenses were unforeseen at that time, that would potentially qualify as a material change.