How is it that the mother in law decides to come stay at my house and "help out with the baby" until…

How is it that the mother in law decides to come stay at my house and "help out with the baby" until her husband left out of town.. like my baby is almost 2 months I don't need anymore help like in the beginning when my husband was out of town.. she has a husband when is convenient for her, cause she stays borrowing money from us , ok tell your "husband to give it to you. Grown woman and still living at her husbands moms paying no rent and both have no job 😑 that is NOT where I want to be in life when I reach my 40's