Several other sisters were asked if they wanted to do cart witnessing. Their service records are probably not even close to this other sister. The only difference I could see is we are not overweight and she is.
Was actually thinking about this a few days ago.
My Dad became a Dub so he could marry my Mom.
Same thing with an older Elder in our KH. He's given his story many times over the decades - started studying to marry his Dub wife.
Seems like it works far better statistically than the otherwise 10,000 hours spent per new recruit (including the infant baptisms) .