Luckily for Milla, Alvin had a bit of free time from his work with M today and he wanted to spend that free time keeping an eye on his favorite Lord of Spirits. She had a tendency to get into trouble and well... Alvin couldn't afford to let anything happen to her.

Alvin's keeping an eye on her from across the street when she runs into the Shadaloo goons and Yang. Of course she's going to try and take them on all on her own. She wouldn't be Milla if she didn't.

Alvin will sigh and raise his pistol up to take a shot at one of the goons from across the street. There's the opening you were looking for Milla. Enjoy it.