The thing all of you are missing is that censoring Alice is a race, where the attackers (secret miners) have to get a longer chain in the time it takes the public miners get only two blocks.

A race they already win by default for for having better hardware. Why would they need to do it secretly. They can JUST DO IT. Theres nothing more to it than that. Alice would be screwed in this situation. Period. She made some powerful enemies and is now rocking a nearly useless wallet.