[tatalegma]

It's not unprofessional and doesn't harm her credibility. That would only be true if what she said was fabricated (and there is no reason to believe that's the case).

It is also easier for her to go public than to try to sue a billion dollar company, and have to be involved in a lawsuit for years. Nobody wants that hassle.

Bullies are able to operate because people keep quiet. Going public is often the best way to defeat a bully. The founder, his wife, and the employee who ripped out her code never thought the general public would know about the things they did. If they did, they would never have done them.