Mom is in ICU Day 1

We went to the hospital to see mom today, and they moved her to ICU, from the PCU (Progressive Care). Not sure what is going on, and it kinda scares me. She had a 102 fever today, her heart started acting up again and they are calling in an infectious disease doctor. They said that all her blood tests come back free of anything and that she shouldn't be on antibiotics, but when she is off them, she gets a fever and chills. I hope that this Infectious disease doctor can tell us something. Mom is weak and sick, and not eating well, she wants to come home. Inside I feel like she is dying on us, but she looks good on the outside. Great skin color, and beautiful. I hate the ICU visiting hours. We can only visit at every odd hour between 9am and 8:45pm. And the visits are for 30 minutes at a time.
Example:
Visits are between (I think I am a little off on the exact times):
- 9:00-9:30am
- 11:00-11:30am
- 1:00-1:30pm
- 3:00-3:30pm
- 5:00-5:30pm
- 8:15-8:45pm
I think that is the exact visiting schedule seems way too restrictive, and her room, no phone, and we had to take her cell phone so we can't contact her at all. Please pray for her and for our family right now. I seem so stressed and mom is so weak.