The OP in this tale is another stressed daughter in law that just wants some privacy and respect from their mother in law. Snooping mom’s seems to be a common theme for newly married couples. Mom’s just don’t understand when they’ve crossed the line. The OP decided to put glitter on all the door knobs that were marked off-limit to guests. This prank perfectly proved that the MIL had been snooping behind everyone’s backs. MIL was horrified and got glitter all over their car. Only you and the moral judges of Reddit can decide who’s really in the wrong.