msycamore said:

...

"In 1985, Ben Burtt supervised a stereo remix for home video, taking into account the acoustics of television audio (as this was the pre-home theatre days it has the least dynamic range of any mix)."

Comparing it against the original Dolby Stereo tracks available, the dynamic range is pretty equal...

It was Belbucus who said, referring to the '85 mix:

From a glance at the waveform it appears to be the least dynamic of all...

It would be fairly easy to check peak vs RMS levels for both mixes in an audio editor to confirm if he was right.

zombie84 said:

She's also Scottish. And based on seeing other films she is in, it's no wonder so many people think it's not her in any version. I believe it.

But thanks for the corrects regardless! I'll look into updating the page with more accurate info. :)

While her parents were Sottish-Irish, Shelagh was born and educated in Surrey, England.

As a versatile actress, she had a "deft ability with accents".

(source)