«Help, my daughter's girlfriend is a slacker!»

When my daughter's best friend, 7, is visiting, I want the two girls to help tidy up in the evening. However, my daughter's friend tries to avoid it every time, feigns a stomach ache or goes straight home. My daughter thinks this is unfair. Can I insist that her friend tidies up even though she's not my daughter?
Anne, 39, Bern
What our team of experts says:

Our team of experts:
Nicole Althaus, 49, is editor-in-chief of magazines, columnist, author and member of the editorial board of "NZZ am Sonntag". She was previously editor-in-chief of "wir eltern" and initiated and managed the mum blog on "Tagesanzeiger.ch". Nicole Althaus is the mother of two children, 18 and 14.
Stefanie Rietzler is a psychologist, author ("Erfolgreich lernen mit ADHS") and runs the Academy for Learning Coaching in Zurich. www.mit-kindern-lernen.ch
Peter Schneider, 59, works as a psychoanalyst and columnist in Zurich. Until 2017, he was Professor of Developmental and Educational Psychology in Bremen; he currently teaches the history and theory of psychoanalysis in Berlin.

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