Oh god, I spent my gap year in Madagascar and remember her - we had cassettes from the market in Antananarivo which we listened to maybe once. I was sure she spelled it Popy though (but pronounced ‘Poopy’, definitely).
There is some amazing Malagasy music out there - stuff played on the valiha, which is a circular harp; and I remember an album of guitar music called Bal Kabosy by I think Rossy, came out around the same time.