That's it?
She only needs to release a TikTok saying
"Sorry you guys were offended!"? You wouldn't try to quantify how badly that idiotic behavior by your employee damaged your company's brand and product line she was representing? I would.
At the very least, I would place her on an immediate leave of absence while I tried to assess how bad the damage was that she had caused to the company's sales and the brand image. Because there's a lot of other employees who
don't do idiotic TikTok stunts who are depending on working for a profitable company to support their families.
I'd imagine within two weeks time I'd have made that assessment, had my T's crossed by HR and my I's dotted by Legal, and she wouldn't be working for my company after that kind of bizarrely idiotic public stunt.