I have absolutely NO experience of this .... I always thought that an elongated palate meant that food was often re-directed and coming out of their nose, and gagging on their food and water. BUT like I said, I have NO experience with this.
I know Orion does make the cute little noises .. and I sincerely believe from what I see on video that she does have the strongest and most defined little character you could get and that's what a lot of the noises are because the noises she makes are totally reflected in those defiant little eyes of hers. Now whether the noises she makes are louder than most other bulldogs .. maybe. It could be that she has a small trachea too .... Maggie has one the size of a pencil apparently and I am fully confident that her snoring is one day going to vibrate our bed out of the room and into the hallway.
Apart from that, with no experience, I am of very little help. If you feel comfortable with your "stand-in" vet then maybe call and talk to them, or wait until your regular vet comes back and talk to her.