Should I Prioritize Work or My Friend in a Diabetic Coma?

Was suppose to work to fill in for someone today at my job that's sick, until yesterday my only best friend mother called my job to tell me she's in a diabetic coma, i broke down i just seen her over Christmas break she came to see me and my kids, now her mom is going to ny this evening on bus and i want to see her i asked my boss through text still no respond now im a pharmacy technician i feel like they should pull ppl who work at other stores that's off who wants to work idk but im so emotional idk what ill do If they say i can't im suppose to be off anyways today originally smh