I am copying the comments I left on Harry's post because I feel very strongly that this needs to be spread to as many people as possible so that the outrage becomes known; to hopefully prevent this Chillul HaShem from ever happening again.
There are many comments in this thread that as an Orthodox Jew I find truly disturbing. It is no wonder that the Chiloni world hates Charedim so much. For all of the Ahavas Yisroel that we're supposed to have we can't even treat a woman - who may or may not be in the wrong -with simple Kavod HaBrios. Explain to her why the community has the feelings it does, talk to her. Treat her with dignity - she'll listen.
Egged is not a Halachic company - it is however a company that will abide by Halacha if the community demands it. If the bus wasn't a Mehadrin bus then it wasn't a Mehadrin bus and the Community obviously doesn't care enough to go through the process of getting it fixed.
That's the end of the story. Whatever wrong she did shouldn't even be discussed; the community has decided it doesn't care enough to prevent something like this from happening.