[quote=@DJAtomika]
I don't think school sick bays carry cardiac meds. As far as I know, that sorta stuff is pharmacy or clinic only .
[/quote]

Most probably. They'd have a first aid box and a phone with 911 written on it in big letters, though. 

Still, there'd prolly be some kinda pain killers. They might help.

In the long term though, that old lady needs a hospital. Maybe you'll find an ambulance outside? Maybe a zombie will nab one of your toes as you walk past an empty janitor's closet. Who knows!?