I also think it is about her bacground and upbringing..
Remember she said ki kitna bhi gussa ho ma se baat pyaar se kar hi sakte ho na.. So the fact that SS does not treat Astha right also added to the fact that he does not respect women.
She does not understand the complexities involved in human relationships.
She has been taught that however bad that person is, you love them eg her father.
For her men are of two types: those who respect women and those who do not!
She just needs exposure and some growing up.
She has lived in a cocoon for way too long to understand grey
Yeah she can show that she is strong in front of Sabh so they do not pounce on her like she is prey. But she needs to have a breakdown for SS once she learns he is kidnapped. Either in front of him, ahir or alone AT LEAST and Shaan Astha. Or else Shaan will feel she does not care .