New Director of Clinical Services struggling with staffing issues

I think when I posted this thread, I was definitely to the brink of complete exhaustion. The main problem was that on my third shift I had one staff member out last week with death in her family and one person who had been out for over a month with health issues. I had originally hired a temporary CNA to cover for the person who has been out with health issues, but she decided to abandon the job (and the residents for that matter). So, in essence I was down three staff members in one week. Fortunately, both of these staff members will be back within the next week, and the other staff are pitching in a little more to cover the shifts until we are fully staffed again.

Unfortunately, we are a small 35 resident assisted living facility and we are required to have two nursing staff members in the building at all times. With the small facility, comes the inherit small staff pool. I am currently working on hiring some more PRN staff. The PRN staff that I have has been bumped up to part-time or full-time due to staffing needs or they have another job that we have to work around. Unfortunately, I cannot just leave the facility with no staffing available. The staff that I have on other shifts can be pretty selfish when it comes to their own shifts...

Either way, the issue is resolved now... Thank you all for your advice.

On the subject of agency staffing, I am not allowed to use it. Corporate company believes agency staffing to be like cancer to a business.