In an edit I did I really wanted Rey to say I am a Jedi. I even tried for I’m a Jedi (in TROS she says I’m NOT I am.) No sound bite I found matched up well. So I tried the uh sound from the existing dialogue and the result was less than satisfying. This was last year and I spent an obscene amount of time trying to make it work. It seems like this is the same result now. It just doesn’t sound quite right. With the way she really needs to say it the best (easy) way is to do it from a rear shot of her. Which is also less than ideal. It may seem like an uphill battle but the key here to make it sound and look right is finding alternate dialogue from Rey and digitally altering her mouth movements. No easy task to pull of convincingly.