If you meant something else, here are possible corrections based on similar-sounding phrases:
If you receive a push notification that literally says “lembouruine mandy added,” do not panic. Here is a step-by-step guide: lembouruine mandy added
If Mandy is being added as a rival or a specific plot point: If you meant something else, here are possible
If you are looking for this specific phrase in a technical or creative context, it is most likely: Is this from a specific document, chat, or database