When Michaela wanted to call Asher to tell her she was sorry for her dad, she didn't have his number. However, in the first season when Asher was banging on the door to come in after they killed Sam, Michaela said she texted him and told her she was at the library.
It is shown that Sinclair's body falls right in front of Connor and Michaela, but in the aerial view there is no one around Sinclair's body.
When Connor and Michaela are leaving the Hapstall mansion, Wes and Laurel call out to them. They stop briefly to look up at them, but Connor's eyes look above Wes and Laurel for a split second even before Sinclair's body falls, as if he was expecting something from the roof.