Even if there is a stricture, and it is made of scar tissue, she might not need surgery. If effective meds keep her in remission, the stricture might not bother her. My own daughter has had a stricture made of scar tissue for at least two years, but is in full remission on Entocort, with no symptoms.
The following link to CCFA talks about various types of surgery, and about draining abcesses.
http://www.ccfa.org/info/surgery/surgerycd