Yo, people: as a friend of Neni's (though not the 'friend' in question), she's not saying she has insider info, nor is she trying to make it seem like she does. When she said she heard from a friend, she means she heard from a friend who's been watching the P4U2 livestreams and thought s/he heard something about two DLC characters. She's in no way saying or trying to say she's certain there's more characters to be found.
Her exact words:
Precisely, thanks for clarifying. It was too harsh of me to assume anyone was lying, though, but thinking that anything about it could be reliable would just be nonsensical. I don't think anyone here hates her, and most took her word with a grain of salt like Rocksxp advised so it's not as though she did anything wrong.