easy
1) check for danger, eg did she get electrocuted? got bitten by a radioactive rat etc
2) once confirmed she's not responding, if no respond - point to someone and ask them call 911
3) check if airway is obstructed, head tilt chin lift, open a bit of the mouth to see if there are anything
4) while checking airway, check if breathing is ok
5) if no breathing, immediately start 30 chest compression
6) then give 2 breathes
7) once aunty start showing movement put her to recovery position