You know, I would still have some respect for Andred if he had talked to Leela and explained that he's still alive any of the many times during these four episodes the two of them were alone and unobserved. Instead of staying in character and being an absolute dick to her.
Or if he'd entrusted her with his plans before his meeting with Narvin.
And what makes it even worse, is that Leela suffers a bit of a character regression between The Invasion of Time and Zagreus / Weapon of Choice. She's less aware of how Gallifreyan society works, or what words mean, K9 says in Square One that she can't read (or at least not well).
And from a Doylist perspective, this can be explained as bad, racist, writing. Which, fair enough, it is. But on a watsonian perspective... how long has Leela been living on Gallifrey now, with Andred? For longer than Romana has been president, I'd assume, and she got captured and was gone for 20 years. Was she just Andred's exotic housewife during all this time, removed from society? She was curious during her time with Four, learning how to write even! I don't believe she'd suddenly lose all of her curiosity like that. Did Andred just not engage with her on any level beyond “this is my hot wife from another planet”? Did he not try to help her fulfill her curiosity, get better at reading and writing? Did they not talk about Gallifreyan politics, a topic that would have affected Leela personally, with all of the xenophobia / racism and her being a human? What kind of terrible husband was Andred, and how did Leela keep loving him for so long until his death / regeneration?
Rest in piss, you won't be missed. Someone please tell me I don't have to keep dealing with that fucker in S2...