Well, how do you think she survived the missile attack?.. Sorry, but the person with the most money is always the winner (It's easy to win in vegas if you can afford to out-bet the casinos)..
And about ad-block.. it's not a web-page.. It's her actual anti-virus software.. from the choices I'd guess she is using norton antivirus.
Yes, she does use Linux. There was a whole set of strips where she send scathing emails to Bill Gates and taunts him untill he counterattacks with missiles. One of the best!
Dilmom is leet - I bet she uses GNU/Linux, so why would she even react to scareware? she probably uses adblock and doesn't even see that advertisement... ;-)