Geekgirl, I'm really sorry to hear about your bowl. It is indeed a beauty.
You might try looking on the clayart archive for suggestions if you are interested in attempting your own repair. clayart is an e-discussion list for potters, and worth subscribing to (temporarily) if you want to ask "the field" any questions of your own.
This thread - japanese laquer/gold pottery repair?
- talks about a couple of non-traditional approaches. I also tried the clayart search page
on the term kintsugi
and found these other threads:
surfing with helen bates - mended teabowls and much more
gold silver pottery repair
trip to china/japan
Maybe you'll find what you're looking for there. If not, I know that the list has several subscribers who have learned pottery according to the Japanese tradition, so perhaps a posted inquiry will do the trick for you.
In general, clayart is a real treasure trove of information on all things pottery-related. Well worth a browse!