Split Assignment?

I work LTC in a facility with 92 residents. Tonight there were 3 LPNS for those 92 residents and no RN in house. Our faclity has 2 wings, North and South. Tonite I had the privilege of working the "split" assignment. Which meant I had 15 residents on North and 14 residents on South to pass meds to, to do txs, skilled notes, q day charting, weekly skin assesments and top of all that a resident on North fell while I was passing meds on south. So in the middle of my south med pass and to stop go to other side of the buliding, assess her, get her off the floor and start neuro checks plus call her family and the MD. Both of my med passes were completly out of compliance. And to add to the chaos there were only 4 CNAs in the whole building! I felt totally unsafe tonite. I was nothing but frazzeled from the beginning of my shift to the end. I don't feel like this is a safe way to work. We are so undestaffed at this point in time that the other night they had nurses working as CNAs. I personally have worked 60+ hrs this week alone. myself and other nurses are tired, the cnas are worked to death and it seems like administration really does not care. They think that offering you a 25$ gas card in incentive enough to put you license on the line. It doesn't matter if you say yes to them 10 xs in a row to work extra the first time you tell them no, you are treated like garbage and sadly I'm not over exagerrating. Has anyone else ever worked in conditions like these. I really do not feel safe and feel that my license might be in jeporady. Trying to take care of ppl on both sides of a building is crazy in my opinion.