In my opinion she wants the heat and the direct heat...
the temp above the substrate is too cool she wants warmer direct belly heat.
This is why everyone is advised to take temps at the glass and make sure they are about 90.
people make the mistake of temping the substrate and when that is at 90 the glass is way too hot and will cause burns.
You should shove all the substrate aside and temp gun the full pad every area because it will be different all over. Sometimes you hit an area that’s 90 but a portion is 95. You must be very careful. I take the less is more approach I’d rather it be 88-89 than 94. Feel me?