Sadly, it seems that they both went into the River Dee. Police are now searching the coast.
Police will have more information than is made public. Perhaps they have got info from work colleagues or family members, perhaps a note was left behind and coupled with the fact they haven't been seen leaving the riverside they will be confident that they went into the river.
The family won't be telling the media about any issues that may have been going on, but they would have told the police any such matters.
It reminded me of the lady in Prestwick back in 2005.
Relatives in Hungary urged people not to spread "unfounded rumours" about the disappearance of Eliza and Henrietta Huszti .
www.bbc.co.uk