all the girls on my hall freshmen year ended up in the same sorority. but our friend did not recieve a bid........the next fall she went to the cob and still didnt make it, but I convinced her to rush a third time in formal recruitment that next spring and she was given a bid. sometimes things happen that prevent the right people from getting bids. she was not only a friend, I felt that she belonged...that she had great potential in being a sister....we just had to overcome some adversity with sisters. I think its a great that one of my best friends is now my sister, she is doing great in our chapter and has served on our executive council....I dont know what we would have done if she didnt come back....
so in my opinion, go for it, you never know what the reason was... and my advice to the chapters....go for quality not quantity!