Kiara had been in the hospital for a while now, when she first woke up, she was quite confused, as she remembered she was at home with her brother, picking her phone she tried calling him several times, but got no response. Only then did she call Ali and learned about what happened.
Her brother had offended some rich young master, who wanted to take revenge on them. He was the one behind the attack too. Kevin was afraid if he stayed with her any longer, she'd be in constant danger, so he just gave a call to her boss Natasha and then left the city for a week or two, until the matter calms down.
Natasha didn't know what to do, so she just called him and told him everything. Thus Ali went to her home, found her sick and got her here.