There two. Together. They kill me. The sisters.
6 months in, and I cannot believe how much they love each other. Every morning, Mia wakes up racing into our room looking for Lucy (whose wake up is often around 5am, and Brian plops her down next to me while he goes off and does this thing called "exercise"), and the three of us spend the first few minutes of every day cuddling and giggling. Mia does everything she can to make Lucy laugh, Lucy doesn't take her eyes off Mia, and I... supervise. Lucy is always in the best mood in the mornings, and Mia takes full advantage. This has also helped getting Mia out of bed, who used to resist weekday wake ups.
Every Monday, Lucy goes to daycare with Mia. Mia reported stays in the baby room for the first few minutes of the day to "make sure Lucy isn't sad", before heading out to join the big kids. When the daycare teachers told me this after the first day, I had to hold back the tears.
On days that I can barely keep my eyelids from closing, I realize that the best thing I could have done for Mia was to give her this baby sister. And I often think about how lucky Lucy is to have three people to love her.