I can imagine Zahra getting in bed with the queen extremely fast. Zahra is extremely intelligent and quite manipulative when she wants to, and she can also be quite cruel, like she can be with Fairy depending on your choices. You put together the queen and zahra, and the queen has 0 chances, in my humble opinione. She would become Zahra's puppet quite fast.
Zahra has this calm and serene attitude that can melt people with a look, and the queen is obviously desperate to make up parenting figures.