She's talking about Holly, who remains a minor character. We like the quote because it challenges us to reflect on the nature of time, whether we agree with Susie's rather broadly painted conception of it.

Susie does get both wishes, the first one for all eternity; the second for that time in the arms of Ray.

Len's phrase is comforting at first, but hollow and even cruel eight years later, when he brings them Susie's charm. It also shows his desire to maintain order in the chaos.