Cherie that is awful. I don't know why they couldn't even find a push-gurney for her to lay on, if not a bed. How cruel, they knew she had an LP and should be laying flat for a few days.
I hope she stays flat now, no pillow, no recliner, to give the leak a chance to clot. Putting pressure, by laying on her back. If she is allowed to go to the ladies room she must stay half bent over and not raise her head and not go alone.
Drink plenty of fluids, sip them slowly, (water, juices) to replenish the fluid loss in her Spinal fluids. Build the pressure back up. Sometimes they take too much out with the LP, or too quickly.
Remember sip: If she drinks too much at once, it will go right out of her and too many visits to the ladies room. Pepsi is a diuretic, not good at this point. Caffeine won't help now. She may need a patch anyway, some people do. I hope and pray she won't need it, and is okay real soon, you too my dear.
JMO, if the Dr gave orders follow them. I am just trying to remember my LP's and Dr's. advice. Also I have seen this in hospitals here. No Aspirin or Vitamin E.
I am sure you know all this, the researcher/reader that you are.