It depends on what is exactly said in that campus's recruitment rules. If you live with someone that usually falls under normal social contact. And if they are in their own apartment obviously they can talk to each other lol. But it depends on the rules on going out to meijers, mall and parties. On our campus, parties are a definite no. Or at least they cannot ride in the same car together. However depending on the campus, if they are roommates they can do the normal things like grocery shop and what not as long as they aren't talking about recruitment.
And really encourage your daughter to not talk about recruitment during recruitment with her roommate because comments from her affiliated roommate may give her biases and its even more exciting on Bid day when the roommate doesn't know exactly which sorority she is accepting a bid to.
Also one last thing. Because your daughter did go through COB, please make sure that she keeps an open mind throughout recruitment because her mind may change on which sorority she really would like to go. And I hope her roommate is supportive if she does decide to go to another sorority than the one is she in.
Hope she is excited for recruitment and I am happy that a parent is on here and so supportive of their daughter going through recruitment