proxy computer help for my mom

My mom's computer seems to have gotten nommed on by malware -- UpdateSoftNow, specifically. Among other things it is a browser hijacker, but it is generally unpleasant and also persistent.

All the removal instructions I can find are for Windows machines. She is on a Mac.

Anyone happen to know how to get rid of something like this, and/or have a phone # for appropriate Apple support that involves talking to a person?

also, fic!

Now that Remix authors have been revealed, I can show off what I wrote:

Trans*itions (the Lizandra Hairis remix) (1045 words) by isabeau
Chapters: 1/1
Fandom: Buffy the Vampire Slayer
Rating: Teen And Up Audiences
Warnings: Author Chose Not To Use Archive Warnings
Characters: Xander Harris
Additional Tags: Genderbending, Remix
Summary:

Five things that changed when Xander became a girl, and one that didn't really.