The tree shadow that's behind all the realms thing picture seems to be the same as the shadow figure that creeps up behind the witness and presumably folds her like laundry... 0_0
Thinking about it more. I'd guess the angel of this realm or someone who works for them folded the girl. Mc's angel mentioned asking them for help but it seems they didn't wait to be asked
To clarify. Aleph is not the attacker. It's a different plantus we don't know or someone related to a plantus. Tree root shadow, tree of life related entity.