Boundaries are a good thing, especially if its dealing with family and there is drama, negativity, toxicity. If they get mad, yes, its a good sign that the boundary was necessary. I do not allow negativity into my world and put boundaries when necessary...even if its with family. Boundaries are important to your emotional, mental, physical, financial, and relational well being. You are not “wrong” for placing them. You are honoring yourself by doing so.