One scheduling mishap is totally excusable, but when every single family event shows a pattern of being scheduled during unswitchable shifts, targeting a specific relative's work days, things get a little fishy… Or in this case, petty. MILs enter monster-in-law territory when they deliberately exclude their daughter-in-law and then guilt-trip her over her inability to attend.
A vet tech spent years building her career; why would she sideline it now? Following her love for animals and her veterinary passions, she finally secured a good job, working rotating weekends to secure some extra cash flow. With wedding expenses coming up, the weekend shifts were putting gravy on the table; however, her relatives started making her feel guilty for her work ethic, particularly her retired socialite mother-in-law.
It's as if her mother-in-law expected her to call out of her shifts to attend a 60-year-old woman's birthday party or to bring a gift to a distant cousin's engagement celebration. Sorry, but the emergency vet clinic has one on-call vet tech, and those animal health emergencies take priority.