Brother and Sister update:
After some solid feedback, and some research on omni- POV writing, I've opted to break up the "head hopping", as was suggested, and keep the POV switches to specific chapters.
Added a new first chapter (still draft phase) to really drive the horror aspect of the abuse Berta faces. That one was hard to write, for personal reasons.
I also edited the chapter "Berta and Bruno" to cut the head hopping out, and add more suspense.