Discomfort with Neighbor

C Neighbor and I agreed to find a contractor for our porch and stairs. We live in row homes.
T My neighbor talks a lot and tends to be a know it all.
F Resentment, inadequacy
A Rumination, judging self, I speak after she finishes speaking
Not doing: not initiating pertinent info or asking my own questions
R resentment, not feeling like I can speak up as I normally do

I want to speak up and listen without feeling rushed. She speaks on top of me. A lot. Don’t know if it is intentional or she in fact does not hear me. I have been told I have a soft voice. But I think I speak as loud as anyone else. Any tips on how I can show up and be at peace with who I am?