I'll go along with the suggestion she is mentally disordered. No psychologically healthy person would carry on the way she has (and still does!). She has a known neurological disorder (severe epilepsy) and I'm sure something has malfunctioned, somewhere, that has damaged her filters (not that I'm suggesting everyone with epilepsy is mentally disordered, far from it- but she's an extreme case).
She will be absolutely soaking up and loving the attention she's getting with the Australia/ BB debacle. Best, IMHO, to let her 'have her moment' and then gently put her back on 'ignore'.