Siri making noise while texting

Siri on my wife’s iPhone likes to make partial word noises as she texts. No complete words, just fragments. Has anyone else seen this? Is there a fix? It has happened over multiple updates to iOS13.

Settings > Accessibility > Spoken Content > Typing Feedback

Turn off whatever is on.

I just checked her settings and nothing is turned on.

Try flipping the switches ON, then OFF, then shutdown/restart.