Yeah, the mention of "all three" is pretty vague. It's referring to Lucia, Keira, and Nora, who all live in Canada. It seems Lucia is trying to get them to move south (to the US) to be close to Sterling's family.
Amber x Caspian currently has the most "likes" of the Last Chance suggestions, but we'll see how it does in the second round. It's lost several times before.