@waifu >she's in the public domain
For something to be in the public domain, it must both meet the requirements of copyrightability and also not be covered by copyright.

Due to the Berne convention, every "creative" work is automatically copyrighted, plus it's extremely difficult to validly place something into the public domain - in some countries that can only happen when the copyright term expires.

The bot software is most likely copyrighted and so not public domain.

Also, I doubt having a bot regurgitate a combination of many copyrighted works places such combined works in the output into the public domain.