How about this? MB drives to the house beside himself, pissed about CPS, the eviction (when he doesn’t know the inspector told LK and RG they could re-enter the house), and all the unravelling that has occurred. RG’s testimony about MB starting with, “I don’t want a war…” or whatever, is false to make MB seem under control.
LK is actually the first to confront MB and starts jumping around, hits him a couple times with her phone, backing him up to his truck (sound familiar?) Hits him hard enough to cause blood, head wounds bleed profusely. She’s not pounding him, but has backed him up as she screams at him. In the meantime, ED is trying to call her.
RG is in the house, takes ED’s call and steps out accidentally releasing Rosie who comes and stands aside. RG carries his phone to LK. She pulls the gun out of her pocket and hands it to RG telling him to hold MB there while she talks to ED.
RG does or says something… Rosie starts to attack MB (multiple bite marks), while LK talks to ED. MB in defending himself from Rosie and RG, get into a struggle over the gun, at which point LK says, “Michael has the gun”.
Gun goes off. LK gets hit. Rob has MB on the ground beating and choking him into unconsciousness while LK and/or ED call 911. Third shot is a fantasy story RG makes up to make himself a victim as well.