>>1380049No oddly, I suspect it's because when she started out she spoke the most broken japanese around and she's trying to keep it up high even though she feels it could be better.
There was a clip taken from a stream where she answered about it, "not any time soon" or some shit like that, the most english you'll get from her was from when she collaborated with moona on superbunny man, the next is when she finally collaborated with hololive EN but god knows when that happens.
TLDR no, in fallout4 she does a fair bit more english than normal if that works