On Wed, Oct 14, 2020 at 12:31 PM, Blaster wrote:

It may be that her function keys are in media mode.

Great catch!  On HP machines, at least, F6, F7, and F8 are all volume control media keys [Mute, Volume Down, and Volume Up, respectively].  The fact that a slider comes up makes me think that F7 is a volume media key and that it's showing where that key press has taken the volume.  I turned the media keys off on my machine, but if you use FN+ the given key it does what it would have in Media Key mode, and a slider always appears if I'm adjusting volume up or down.
 
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Brian - Windows 10 Pro, 64-Bit, Version 2004, Build 19041  

It’s hard waking up and realizing it’s not always black and white.

     ~ Kelley Boorn