that TERRIBLE LUCK is sus as hell. I'm just guessing here but just in case I somehow get this right, I will put a spoiler here.
the excellent luck means that she will pass on, which is good because that's what she was supposed to do. She's only here because she regret leaving these two behind, so she took over this child's but didn't remember it and thought she reincarnated. The terrible luck is obviously about the husband letting go of her so she could move on, despite not wanting so.