May be she has a family problem. I have heard that actress Drasti Dhami had to take 27 family member's permission to wear a mini skirt for a shoot. Lots of actresses have it. This is India. Girls do not have the permission to do whatever they like here. With that if she really has a real relationship with Arhaan and that is very important to her she has to stay image conscious.
Not all are like Sana. Ghar se bhaga hua, kuchh bhi karein koi parwa nehi. Not all galz or boys have that freedom. Did Shukla ever opened his shirt? No. Why? Becoz man too have that restriction. Image conscious Sid bhi hai. Did Salman ever did a kissing scene? No. Same reason.

