In no time, Ivy's incident spread to everyone in the family, and Daniel and Rachel were the first ones to rush to the hospital. When they saw the state Ivy was in, Rachel almost burst into tears while Daniel was mortified.
Of course, he was Aria's best friend. But that didn't mean, he didn't consider Ivy his good friend. It was true that they bickered every time they met. But that was their way of showing off their friendship.
When Daniel saw the state Ivy was in and given the possibility that she might never wake up, never, he felt the ground under him collapse. He had been swamped with work recently and hadn't had time to speak to either Aria or Ivy. So, he had no idea what was happening with them and how their lives were.