in short, IMO
She needs to stay at home until this beer virus calms down......
Opinions please -
Depending on the timeframes involved, they may not be able to board their second cruise if the current rules are still in effect then.
This is from the current DCL rules, bold added for emphasis:
As a reminder, any guest or crew member who has traveled from, to or through China, including Hong Kong and Macau, South Korea, Italy, Iran or Japan, within 14 days of departure will not be able to board our ships.
Additionally, any guest or crew member who has been in contact with someone from these areas, including guests with connecting flights in these locations, also will not be able to board, nor will anyone who has helped care for someone suspected of having or diagnosed with COVID-19, or who is currently subject to health monitoring for possible exposure. Guests who have air travel booked through Disney Cruise Line will automatically have their flights rebooked on an alternate route. Guests who booked their own air travel arrangements should contact their airlines directly to make the appropriate changes.