She will want to know all the basic pertinent information about you. Many people actually have this typed up and are able to hand it, fax it, or email it to whomever they wish. They have begun to refer to this as a shidduch resume. This usually includes name, address and phone #, information regarding education, family, employment, shul affiliations, Rabbis to whom you are connected, and some references – names and telephone #s of people who know you and can vouch for you, your family, and your good character. Oh…and the type of guy you are looking looking for.
I think that covers it. You might want to get this type of info together before the shadchan comes.
Hope that helps! Hatzlacha rabbah and may you find your zivug hagun b’karov.