Apart from himself, RK didn't let anyone else know about this. The outside world had always thought that Alia was a part of his private life but to be honest, it wasn't. The reason why he deliberately concealed the fact was that he wanted everyone to think that Alia was his biological daughter and let her have a happy childhood with other children of the same age as her. Therefore, he didn't say anything about it. No matter what the outside world said, he didn't explain it. However, that day, he wanted to tell Stella about it.
To be honest, Stella was very surprised to hear the news. She had thought about all the possibilities, but she had never expected that Alia was not RK's biological daughter.
"I found her and adopted her at the police station!" RK continued.