2001 Sonata - Alarm preventing it from starting...ideas ?

2001 Sonata - Alarm preventing it from starting...ideas ?

Daughter borrowed car.
Apparently did something wrong with 'fob' to set off alarm.
Does not start.
Alarm keeps going off.
All other lights & radio appear to be working fine.
Turn key - engine does not start - alarms go off.
Would like to have alarms shut off & be able to start car...and drive it back home...

Help, please.

THX !

Penguinhead