"And because my old dog Bella(RIP), was a service dog for my mom, I read up on the ADA laws and I can immediately tell what animals are service animals, and what are just pets."
RIP Bella. No wonder OP is so knowledgeable and passionate about service dogs. One clearly had a significant impact on her mother's life. A sharp eye for ADA intruding Karen's is one of OP's strong suits.