if you look closely at her photos on twitter, you can see that her charging cable is fully bent...seems cable is fraying...first pic bottom right...either she is using a cheap 3rd party lighting cable or her Apple one is broken...which can definitely lead to problems, don't know if that would cause the phone to melt, but I think last year a women in Asia got electrocuted and died because of a faulty charging cable....Apple needs to look at her lightening cables...once mine frays I throw them away