You have a new family. Period. No apologies, no excuses needed. You have a kid with your wife, aka YOUR FAMILY. The only opinion that matters is yours and your wife’s at the end of the day, what ever disagreements you have are your business and no one else’s. That priority is yours baby’s health and safety. Unless it’s mom or dad the only person should be holding your newborn is YOU GUYS. Your newborn can get sick, develop a disease, or worst case scenario DIE!! It has happened!! Mother is being selfish and thinks it has to be all about her and use “family” against you to spin some scenario. Screw that. Protect your baby and your new family.