I was surprised she could lift her head, She may not have a broken neck, or perhaps a cable, but if it was major I don't think she could lift it at all, The fact that it is hot tells there is something wrong. I have the same problem with a leg of Baby Ruth that will not bend and gets hot, but not floppy. I think Innvo needs to see this one in particular with the other one of her floppy head. They may want you to send her back or will want more info. It may be a jammed cable or something similiar since she gets hot so fast, Do not turn her back on unless they tell you too. I really am not sure what it is, but it is not normal in any regard. What do the other members like Crewella, IMR, Kat and what does degers think. Try asking degers, I know he was on and he may know more about what to do I think. Dont give up yet, but do contact Innvo and give them this video and her symptoms as well. They should respond within 24 hrs.
RWM