Final answer:
When encountering an unresponsive individual like Mrs. Bailey, check for responsiveness, call for emergency help, and if necessary, start CPR if the person is not breathing or only gasping.
Step-by-step explanation:
If you find that Mrs. Bailey is unresponsive, the next step is to check her responsiveness and breathing. This can be done by tapping her shoulder and asking loudly if she is okay. If there is no response, you should call for help immediately, ask someone to call 911 (or the local emergency number) and to bring an automated external defibrillator (AED) if available, while you begin to assess her condition further.
Check for signs of breathing; if she is not breathing or only gasping, you should start CPR (cardiopulmonary resuscitation) if you are trained to do so. Ensure you are performing the correct procedure depending on whether you are trained in CPR and comfortable performing the rescue breaths. If you are alone, perform CPR for about two minutes before calling for help if you couldn't do so earlier.