u/Mebetteroffdy-ing

I have finished the film and on my way to the third re-watch but there are still things i do not get it and hope someone can help me answer them:

How did iroha find out yachiyo is kaguya, like why did iroha follow fushi? To find yachiyo? But why? She didn't know yachiyo is kaguya at that point right? Is it because she can't send her something? What is that thing?
During kaguya's 8000 years on earth, why didn't the lunarians contact her? They dont want their princess anymore?
Can't kaguya fix her bamboo pod? She created it back on moon (or so i've heard from others in this sub).
Kaguya can use fushi's body, can't she eat pancakes in that form?

I want to find an artwork that I saw on twitter. I remembered seeing it before twitter refreshed the homepage. It's a black wolf that ate the bunny and is crying. There's also an art of both of them when bunny was still alive and I think the wolf loved the bunny but ate it anyway.