So, how do you bring out the growl in Natalie’s voice? Like she does singing Amazing Grace in the demo.
you can either find a specific growl script or just mess with the pitch line as seen here
Nice to see the pitch!
May I ask, which specific script did this demo use, and why you recommend it?
Or… you really used mouse to draw this pitch? 
I found some on github:
Dynamics_Growl.lua : GitHub - aike/SynthesizerV_ArticulationScripts
synthvGrowl.lua : GitHub - crlotwhite/SynthV-Growl
growl.lua : GitHub - hataori-p/real-voice: Scripts for working with a real voice in Synthesizer V Studio Pro
i just used my mouse as I prefer it a little more than the growl scripts, but both can work!
Thank you all for your suggestions. I will try them all.