Asking grandparents to get get whooping cough vaccine.

Jo • Love my hubby and my Charlotte

What are your thoughts on asking family members to get whooping cough vaccine? My mother in law told us she got hers done as soon as we told her I'm pregnant. I have since informed my own mother that we would prefer that her and my Dad got the vaccine as well. She was offended and is now not talking to me.

Should I just not worry about it?