The protocols were never brought up about Wanda. The Pretender thing, yes, but only in the way that mutants are dealing with it. Framed as a better way for them to have closure. They have not guaranteed us anything regarding Wanda. All of that is fan assumption.
Originally it was stated that if the nexus of your Earth died, so did that earth. Not sure if that is still canon. They may have forgotten that detail.
It's just that there being another her means she's not really fridged.