A Google search got me the tail number. ADS-B data is easily accessible, there are APIs. Seems like some bigger sites like Flight Aware are already redacting info for her tail number, but it took me a few minutes to find another site that didn't seem to.

I think you can credibly make the argument that when these protocols were invented, the intent wasn't for the data to be this public or accessible, and that we could perhaps update the protocols to avoid something like this.

But from a technology point of view, saying that flight data is somehow private is like saying that if I set up an FM radio station and someone buys an FM radio and listens in they're somehow snooping on my radio station.