No she isn't. I am talking about the fight on the new version, not the previous ones btw (the one in the quest to have sex with maddie). I tried almost 50 times. The fire breath while blockable still deals a lot of damage. The strat I am assuming is to go intangible so that she doesn't hit you with it. But when you do she just doesn't use the charged up breath. She will use it when you do anything but the intangible move. Meaning it is unavoidable.she is beatable even with orgone, I've never fought her with any and always beat her without. Its more the luck of the draw honestly and hope she doesn't spam fire breath and knowing when to block
What do you mean: "she is beatable even with orgone"? don't you mean even without it? It should be easy with orgone, and even without it, it should be possible if she wouldn't hold in that fire breath when you go intangible. So to me the fact that she can outmaneuver you like that seems like a bug, since you can't get orgone at this point (it's the objective, so you need to go fight her without it). Either that or it was intended for us to lose...which I don't think is the case since you are supposed to win it story wise.
There is another bug too that I had the 1st time I fought her before realoading in which you would lose after she hits you twice too even if my health was at around 70%. Adding this two things together...to me it seems like a bug. Could be wrong though, maybe I am not getting what you are supposed to do.