because he wanted to get them to give him back walt. and they said he had to set henry gale free. so he shot her so he got get him out cuz she was the only one guarding the hatch. then libby walked in and he shot her b/c he was scared. and shot himself to make it just look like henry gale escaped.
And all that enraged them to action... to leave with him.
so then analucia was one of "the others" that kidnapped walt?
she was NOT. or else she would have let Henry go herself. She was shot because she was in the way of Mike's plan to free Henry.