Hannah Powell had been throwing up and felt exhausted after a night out on a bar crawl
with two friends in Zante, Greece, in August 2016
"I didn't know why I couldn't see. I thought there was something around my eyes, my head. I remember slyly answering the phone to my dad.
"He was telling me not to worry and he was on his way but it kept cutting out.
"I remember hiding my phone under my armpit thinking they were going to take it off me."