No. Asahi's mother was the one who sold her off. He wasn't actually in the cutscene. The Imperial officer and Asahi's mother were discussing Asahi's potential in training among the Garleans and the officer spotted Yotsuyu. Asahi might even be younger than Yotsuyu. He certainly looks very young. Since he was the star child though I could easily see her blaming him.
Curious Yotsuyu talks about the woman in the echo vision as her mother. Maybe she was lying about Yotsuyu being her niece.