Well anu, if at all Badi-Ma comes to know, i think it would be much later, but I think both Ishaan and Badi-Ma will have an influence on her realization towards moving on.
With regards to suhaana caring for sid, awww man...that jerk doesn't deserve one bit of her sympathy, now he is all set to take advantage of her concern towards him....that is why I am eager to see how Ishaan will help her learn about Sid's intentions.
@manasi_31..I'm don't really think, she might actually step up and tell Badi-Ma about it herself, maybe Badi-Ma comes to know about it through some other way. However,it maybe it could play a major role in suhaana's realization.