I am a sucker for these feminist takes on classic literature. Some of them genuinely add a fullness to the original stories and do a great job of rehabilitating them such as The Song of Achilles by Madeline Miller. Other works brutally expose them such as The Mere Wife by Mariana Dahvana Headley. Clytemnestra is in the latter category.

One little nit: I would have cut a short section at the end where Clytemnestra tries to explain the relationship with her lover Aegisthus. It's just unnecessary.