Ishu knows about Aditya?

I can't recall but was there any scene when Ishu heard about Raman's first child?

i think she heard from Raman family kyon ki bhalla family mein kisi ne kaha tha ki aditya ko pahli hi boarding mein dala hua hai

Depends on CVs, or else... she was sitting in court, when lawyer mentioned about aditya...Or else to create more drama and shocks, blooper would be presented, as ishu never knew that..