Perhaps I should make things clear for what Eris' feelings towards Meeka are.
Since she came from such a rotten upbringing, Eris as a deep admiration for the things that she considers pure, and that's why she is deeply impressed with Meeka. It's a mix of love and delusion, that's very dangerous like a grenade without the safety pin.
Luckily Eris is too levelheaded to go full yandere if she gets turned down, though it will surely be the start of her darkness.