A million dollar company could just be a warehouse and 10 employees. I don't know why they are acting like it's a lot.

They can't afford to check their grammar. You think they can afford to give their employees benefits? You expect the poor CEO to take a pay cut to pay for all of this? You'll just have to go to poor Timmy Executive and tell him he's not getting that second yacht for Christmas this year.

Spring for the spell check function for management.

Yes, except "hire enough people". You can't staff enough to cover 4 out of 8 employees off from a combination of sick, bereavement, and vacation.

It happens. All you can do is prioritize tasks, make it work the best you can with the resources you have, and manage expectations.

If the work can't be rescheduled, and isn't worth paying someone OT to cover, well, then, it's not worth doing.

Also have some professionalism and make sure your management knows how to spell

Maybe she sincerely means 'million dollar company', a company too dirt poor to pay to have adequate coverage...