Karen Klein's tormenters apologize

(CBS News) GREECE, N.Y.-- Four days ago, no one had ever heard of Karen Klein.

Then, a video of the 68-year-old school bus monitor being bullied and taunted on a school bus (Warning: That video contains very graphic language) went viral and made cause an international affair.

In the video, Klein, a widower and grandmother of eight, was viciously tormented by four seventh grade boys.

Last night, her hometown of Greece, N.Y., a suburb of Rochester, held a rally for her.

A fundraising website intended to pay for her to go on vacation has raised over $500,000 from people around the world -- money Klein appreciates but says she doesn't need.

There've also been hundreds of emails.

Among the many messages she's been getting: apologies from the four boys, delivered to her door by police.

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But Klein told "CBS This Morning: Saturday" co-hosts Anthony Mason and Rebecca Jarvis she's not certain the apologies are sincere.

"I'm glad they had to do it," she said. "I think - they're a little short. I guess I'll have to accept them. Because probably, this is as good as it's gonna get, if you know what I mean."

When it was observed she didn't sound entirely convinced of their sincerity, Klein responded, "Right. How sincere is a 13-year-old after they've done what they've done? I don't know. I hope they're sincere. I hope they have learned a lesson. And I hope they can go on with their life as a nicer person."

Klein says it hasn't sunk in yet that hundreds of thousands of dollars have been donated to her.

What's she going to do with it all?

"Anything. Everything. Anything or everything. I'm not sure. I don't know yet. It's got to sink in first."

To see an Anthony Mason report on the Klein bullying and the reactions to it, and the interview of Klein on "CBS This Morning: Saturday," click on the video in the player below.