I can relate to and understand that story.
My sister's spaniel would not leave me alone, out walking he kept check on me, sitting his head & nose were almost always resting on my belly.
After the usual tests, treatments etc and the all clear (as much as the oncologist will allow) Rudy only noses around my pockets searching for treats.
Some dogs seem to have that sense, but not all. As can be seen in the video the other dog has not picked u p on the ladies problem