Unless they're your parents, or hers, I'd tell them to mind their own business.
I don't know when churches became so intrusive, but more than one has. My deceased father-in-law earned my admiration when his church started asking parishioners to sign an abstinence pledge. Nearing 80, and having survived two wives, and in poor health himself, he was in no position to be anything but abstinent but he told them to shove it anyway. Not because he had anything against reserving sex for marriage, but because he found it personally invasive.
It’s the parents who breathe down the necks. It’s not that I have a problem with strict rules intended to avoid funny business or anything. It’s just that I’d prefer to not have the parents with the girl and I 100% (that’s literally the case for these folks) of the time until after we’ve wed. It’s not like I date (or “court,” as if it’s much different) any of the girls from my church anyway, so it’s none of their business so long as I’m not obviously committing serious sin.