The intracellular fluid compartment contains more than the extracellular fluid compartment. The intracellular fluid compartment (ICF) makes about 60% of the total fluid in the human body. It is approximately about 25 liters or 7 gallons of fluid in an average male body. The extracellular fluid compartment is about 30% of the body's total fluid. The other 20% is from the plasma.
I would honestly say greens and fruits and to try to stay away from grease because grease can make you fell gross. Like fresh veggies, fruits, fish and chicken are always good and green tea and water.
The main thing would be to not smoke. But also if you are around someone who smokes, try to limit interaction with them while they are smoking. second hand smoke can be just as deadly. Also doing things like using smoke free facilities, like smoke free hotel rooms and restaurants.
Have a doctor evaluate her for the use of a bed roll belt restraint.