The spokeswoman for Pregnancy Sickness Support welcomed William's decision to cancel a public appearance in order to support Kate.
She said the the Duchess's condition is so fraught that the journey home from hospital to Kensington Palace could have triggered more bouts of nausea and sickness.
– CHARITY TRUSTEE CAITLIN DEAN
Even a car journey could have set off that downward spiral and by the time you get home you're on the way to being dehydrated.
Having support from her partner makes the whole thing more bearable.