spoilers:
Yes, putting Best Jeanist into a Death-Like coma is a bit convenient, but it was probably the only way to really fool the villains. Given they have a person who can make copies and a Doctor who is an expert in genetics and genetic manipulation, they would probably easily spot a fake body.

Still hopefully next time we will be back to the kids. Maybe with Endevour being mentioned a lot in this chapter, maybe we will focus on Shoto and his family
end of spoilers