If someone is pre-lingually (or peri-lingually deaf) they're NEVER going to have a "sound base" in their head (without the use of CI).
CS may give visual "sound patterns" of speech, but this is still a visual base not a sound base (your brain can't create something that doesn't exist in your experiential memory (which is true for profound deaf, especially who also have AN or CAPD/APD)
It's like I have no ability to experience and have a "sound base" for stereo sounds ... I have never had ANY hearing (+120db HL all freq) on my right side ... as such I my brain has never experienced stereo listening.
While I can logically extrapolate what stereo might be like based on my knowledge of sound, theoretical understanding of stereo sound, and first hand experiential knowledge of "visual stereo" (ie 3D/ depth perception etc) ... I can't "hear it" in my head, ie "create a stereo sound base", JUST like the student this woman is speaking of can't create a "sound base" by using Cuing. (They can create a visual "sound pattern" base built on Cuing patterns to imitate sound, but it's still apples and oranges if you have not experienced auditory understanding of sounds, especially speech sounds)
This might sound like I'm "coming down hard" on Cuing ... I'm not. I DO think that it can serve a useful purpose in some/many cases as a supplementary "tool" - however this video is a prime example of how many "professionals" mis-understand what Cuing does for a deaf (and Hoh person). It does NOT create a "sound memory", rather it creates a knowledge of sound patterns through a visual medium (thus creating a VISUAL pattern of spoken English, nor an aural one.
FWIW, I'm actaully considering learning Cuing specifically because I think it would help if/when I elect to take some Linguistic, Latin & Spanish university courses (where ASL would be a helpful component for the English parts of the Lectures etc, but would be lacking in relaying phonetic info ... and showing me how to pronounce new & foreign words - which is always VERY difficult for Hoh & deaf even when we have "hearing voices" in our primary spoken language.
In my case I learning about 70% of my English sounds when my left ear had normal or mild loss (right has always been deaf). As long as people where in the right location (and I didn't have one of my nearly constant ear infections) I was able to distinguish sounds fairly well during my pre-lingual ("listening age") and peri-lingual ("reciting age")... my hearing went from normal/mild to mild/mod flux (with mild APD) with the odd exception of VERY good hearing at 8K, by the time I was in the middle of elementary school. As such I knew basic word sounds, but by the time I was really learning to read (more than "hat, bat, time, line" etc) I had lost access to how sounds blend together especially "sh,th,st,thr,ou,ae,ea,ch,s,"etc which now are either "blurry" or missing altogether due to the HL & APD.
For ME Cuing would likely provide me with a combination of aural and visual "sounds" ... though because of the way my brain "works" I'm almost certain that my brain will favour the visual and silence any aural "signals" as distracting lol. I've always had a very "Deaf Brain" ... so much so that when I get overwhelmed with sounds, sometimes my brain effectively "mutes" everything - turning all the audio input into a sort of "muddy" pink noise or silencing everything altogether as if it hit "mute" on a speaker!
Sorry , I didn't mean to ramble! (I can't sleep....)