Board Thread:Manga/@comment-25933225-20200104141024

Are we really sure she builds everything related to Titans in the Path Realms? As far as we've seen, her actions has been :

- Creating the Wall Titans, which has been a specific order of Karl Fritz

- Rebuilding Zeke's body to prevent him to die, by using a Pure Titan's "vital energy" or whatever you call it. It wasn't an order, but still a very specific case, possibly related to Zeke being a shifter with royal blood.

- Creating the vow renuncing war when Karl Fritz asked it, and later nullifying it on Zeke's command.

- She changed a part of the SoY DNA to prevent them from dying of the plague 600 years ago.

- She was going to sterilize all of SoY.

- Eren new Titan form

So, as far as wev'e seen, her actions has always been in a specific situation (an order of the Founding Titan, saving a royal blood shifter). We've never seen her doing the "common stuff" related to Titans : we haven't seen her building a pure/shifter Titan's body when it is transforming, we haven't seen her transfering a shifter power to its successor, etc...

I think there is a part of automatism in all of this. This automatic part would explain some stuff like : who was building her Titan when she was still alive ? Why is Reiner still regenerating in 124 when Ymir is supposed to have been freed ? Also, she didn't seem to have any role in transfering the power of a shifter to the successor (aka when her three daughters inherited her power).

I'd say that the only things that really needs her attention are specific orders, the rest is automatic. A bit like you don't need to "order" your body to breath, to digest food, but you need to "order" your body when you're doing specific stuff : writing this post, doing sports, etc...

This is why I think Shifters can still transform (which is suggested by Reiner still having the ability to regenerate).  