Thanks much AlDieWillenteKaaprenVaren. But that was not the Cathy. The one I seek was there last winter, and this summer only.
Other ideas: I wonder if there might be, from inside the NL searching on 'Google images' in Dutch, a pic for a solicitor (advocaat?) Cathy/Katrien (with the languages mentioned); maybe 'on sabbatical' this past year; or in Beijing in December 2011 or July 2012; or in Cairo in past 2-3 years?
Seems the Cathy I am looking for, if she is ever to be found again, will be because someone knows her and see this forum posting. : (