Handling a mother-in-law's work complaints

Your girlfriend's mother tends to complain about work during calls, seeking 100% support without room for other perspectives. Your girlfriend dislikes this dynamic and prefers shorter calls. You engage in the complaints, finding them entertaining, adding a humorous element to the conversation that your girlfriend does not appreciate. As a solution, consider having a code word or signal with your girlfriend to discretely wrap up the calls if they veer into complaining, allowing her to maintain control over the conversations and making the interactions more enjoyable for both of you.