My Theory (For the Losties)

I'm now converting this site into a lost one. I'll start with a theory that I strongly believe in. Read on to discover more.
Episode 2: Confirmed Dead. We meet the freighter people, and discover a little bit about them. But let's tune into one story, Miles.
Miles approaches an African American woman's house. When he's inside talking to her, he says: "Two hundred, Mrs. Gardener. I didn't know your grandson was murdered." He begins to walk upstairs.
I think I figured out who that woman was, thanks to Thursday's episode, Meet Kevin Johnson. That woman, was, probably Michael's mother. And her grandson, well, Walt. I am unsure, so I am going to go check the castings for both women to make sure they're the same. I am convinced.