We had a co-worker who actually did have a personal emergency and had to be out of the office for roughly 4 months.
Her job duties were divided between 3 of us at the office, the head boss, the supervisor and ME. We were able to do our own work and juggle her various duties. No one complained because it wasnt exactly complicated, maybe just time consuming.
She comes back from her personal issue and acts like we havent done anything in those 4 months. We try to explain we did things a lil differently, aka..more efficiently. She called us dumbasses. The nerve!!
Curiously enough she doesnt complain she is swamped anymore or that our department would crumble without her. Frankly, if she did no one would listen cause now we know better.