Trying to have a character express hesitation and uncertainty with the tone of their voice. Like the verbal equivalent of an eye roll or an awkward smile. I'd like to say they're employing vocal fry, by lowering their pitch and stretching their voice until it buzzes or rattles a little bit. But I'm concerned the term "vocal fry" isn't common enough to read smoothly if I just write that. For example, I think this is pretty awkward:
"Ha, yeah," she said with vocal fry.
I could avoid the terminology and describe it more literally, does that come across more clearly?
"Yeah," she said, stretching out the word until it buzzed in her throat.
I think it would be best if just "fry" was something that everyone understood, but unfortunately I think it's too unfamiliar:
"Yeah," she said with a low fry.
What is a good broadly-understandable way to describe this kind of speech/tone?
FYI, if you're not familiar, here's the Wikipedia article on this kind of vocal style: https://en.wikipedia.org/wiki/Vocal_fry_register
The article contains an audio example that is easy to play. Source file: https://en.wikipedia.org/wiki/File:Vocal-Fry-May-Undermine-the-Success-of-Young-Women-in-the-Labor-Market-pone.0097506.s005.oga