Purple:
While its okay to ask here how cope with this situation, do NOT accept advice from this forum as far as what to do about the shidduch itself. You should speak to a big Rov about that, and not anonymous people here who don’t know the nitty gritty details. Even personal friends who do know more of the details is not wise to follow advice before taking serious action that can harm you, your daughter, and your and her relationships. Speak to a Rov.