I just saw a short interview in a boulevard magazine on Dutch television, recorded just before the opening. The duchess was at the opening to get money for her charities. The organisation gave her funds for building schools. She said that events like these are good for her to meet people who can support these causes financially.
She also said that 2009 has been a horrible year for her, but that she managed to keep standing. When the interviewer asked what her favourite luxery was, she replied good health. Though she added that she too liked a nice watch etc.
She did not leave immidiately and walked around for an hour or so btw. She was very nice to her make up artist (a Dutchman who does all the celebrities), and the next day she even sent him a text message to thank him.
The interviewer is usually quite sceptical about royals but in this case he was very positive, as were all other people who commented in the item.