Lily Turner explained it very clearly, and Alice Turner understood it well, but she didn't know much about the past between Sophia Wood and Lily Turner.
When Sophia married Christopher Turner back then, Alice was only six or seven years old. At the time, all she knew was that she had a new mom and a little sister; she knew nothing else about the situation.
Back then, it was impossible for her father to tell her anything at that young age. He just told her this was her mom, and that was her sister, and it was enough for her to know that.
As she grew up, Alice accidentally learned that Sophia Wood married her father after her husband died, bringing along Lily Turner.
Since she learned about this, she felt more compassion for Lily Turner and treated her three-year-younger sister better than before.
"You won't acknowledge them, in the future, you'll..."
"Nothing you're worried about will happen; you'll always be my best sister, and I'll always be your most cherished sister."
