She is feeding you argument click bait......You don't need to explain a damn thing to that one.....She likes being mean and rigid....
Obviously, she thinks I would know all about fixing a vehicle. I don't and neither does my husband. It is why we go to reputable mechanics. I use to tell kids that my friend who is a mechanic that he has all these degrees to work on vehicles and that those are his college degrees. I always told kids that having a trade certificate is just as valuable if not more so than a college degree. Everyone has a speciality in trade work and the certicates to show for it. It is also why we when we buy vehicles we get a warranty and sometimes an extended warranty. When my Encore had an oxygen sensor go out on it, it was under warranty still. The only thing that has ever gone out on it since we bought it brand new in 2018.