I do hope you can contact your friend and reassure her that if she's smart, she'll be OK. The ship will get a super disinfecting to CDC standards. Remind her to wash her hands often, avoid putting her hands in/near her mouth, nose and/or eyes, use a tissue or paper towel to open all rest room doors and just relax. We went through this on the Noordam in 2009. We were delayed in embarking and the ship was covered in disinfectant for two days and passengers weren't allowed to touch ANYTHING in the Lido buffet for two days. We still had a marvelous cruise and no-one got sick.