Bethesda Naval Hospital web site has this info--

"My loved one is a patient at WRNMMC. How can I contact them?
If you are trying to reach a loved one at WRNMMC please call: Admissions at (301) 295-2126. The staff will verify the patient is here and help you contact them. Patient information can only be released if the patient or their next of kin have signed a release of information form."

Call her office--might be somebody working on weekend at local office in Los Angeles Phone: (323) 757-8900

Or, DC office Monday--
Phone: (202) 225-2201

Her website makes it clear that she doesn't want to hear from you unless you are one of her constituents, so look up zip codes for that area to have an address to give to office staff. Tell them you want to send her a get well card.