He has no phone (apparently) but she had hers. She is susceptible to asthma attacks, but doesn’t carry a breather/pump with her in a purse.
They have drinks, walk on the beach, and she has an asthma attack. That wouldn’t bring on an attack, would it? What might?
He would need to run back to the room if her phone was weak on charge or couldn’t get a connection. But why would she wander off and leave her stuff where it could be found?
Did they go...”swimming?”
I have asthma attacks, I have an inhaler, I don’t carry it with me. My attacks are very few and far apart, and I know what to avoid.