Yes! Everything you wrote really does make sense!

I rewached the scene in my lunch time.
Elizabeth realizes what’s goin on there and she says:

“So you were leaving me.”

At that moment she feels left, alone…betray!

But Elizabeth in this scene totally agrees to his defection! She doesn't kill Timoshev to make it difficult.

Kery's look at Timoshev before dropping the iron was scary!!!

Thank you, now I feel good!