[https://youtu.be/9JtriJkFmm0] (YouTube link)Flore...  ...ps://youtu.be/9JtriJkFmm0] (YouTube link)Florence SeeSee Rigney celebrated her 90th birthday in the hospital last...  ...rsquo;s in good health. In fact, she was working! Rigney is the oldest working registered nurse in the Uni...  ...rsquo;d think she&rs...