OP it is not your knowledge in ?? at all. You are being a caring friend showing concern. In fact, you seem to care more about this woman's child than she does at the moment. When things are calm & you are together perhaps you could remind her that her child's safety is really important & it would be really sad if her daughter got hurt & she could have prevented it. When I purchased my Appendix the previous owner didn't think it was necessary, so I had it done as part of the PPE. Since it is a DNA work up our vet had to send the test to the University, that took a while & the original owner was just furious that I was concerned about HYPP. My kids came first...soo I told her either wait for the results or take the mare back from our trial. She waited & we still own the mare. If this woman is more worried about $$ than the safety of her kids..well there is very little I would have to do with her!
Horsepower: the extraordinary capacity of a horse to elevate the human spirit!
My castle is my barn ;)