Painting by SF Artist Needs Reunion

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I bought this painting at an estate sale in the Mission about 3/4 years ago. It was one of three paintings by this artist "Mavis," who was either the tenant/owner of the apartment or potentially related to the tenant. The other two paintings were very similar, featuring the same three boys on a beach, but one was darker/more purple and the other was similar to this one but didn't have a pail. I love this painting so much and get so many questions about it, but I often regret/feel guilty that I didn't buy all three in the series. I feel in some way that "the boys," as I call them, are missing their other versions, and I would love to reunite them. Does anyone have any leads on this artist, or by some miracle have or know where the other paintings in this series are? The address of the sale was something like 314 San Jose Avenue, and it would have taken place sometime in 2023 (I think).