Once you accept a bid...

[aephi alum]

She won't be able to go through COB this year. She would be able to participate in recruitment next year, but at many schools it's more difficult for a sophomore to get a bid.

The new member period is intended to give each NM an opportunity to determine if she wants to go through with initiation and become a full sister. Four or five days of whirlwind parties don't really give a PNM enough information to make a lifetime commitment to a sorority. The new member period (even though it's only a few weeks) gives each NM a chance to interact with her pledge sisters and with other sisters she may not have met during rush, and to decide whether to commit. Once initiated into an NPC sorority, you may never join another, even if you deaffiliate from the first.

Also, your daughter should keep in mind that, by her senior year, the current sisters will have graduated and the body of active sisters may be quite different.