The one thing that your daughter really needs to hear is praise from you for taking this huge step for her neshama. Tell her how lucky she is to daven at the Kosel! She can get a bracha from Reb. Kanievsky! She can visit many of the places in the Tanach that she has learned about! She will meet all types of Jews from all the corners of the earth! Encourage her to go visit the great rabbanim for brachot and to visit the mekomos hakedoshim.