I clicked this because I'm a C2 (actually a C1-2) and before I read anything posted, I thought "no voice is likely due to how her tracheostomy and vent are currently setup" but I'm quite surprised, and pleased for your Mom, that she can breathe on her own. That simplifies things greatly and is a major blessing.

Hopefully your Mom's voice will return like the guy three posts above me.

God bless!