i think she dies if she is knocked down with 0hp. if nobody hit her she can survive even 2 giants smashing her head in

i think enemys stop agro on knock down but they might just swing on the moment she got knocked down or something.. argh i cant explain i played too much today lol. im sleepy
or maybe theres a certain time limit that if she gets knocked down 2x in x ammount of time she dies