These two have had a special bond since day one. I sat watching them last night. They were lying on the floor, head to head, discussing a book they were looking at. Such a seemingly simple occurrence and it struck me so forcefully. They love each other. They love being together, talking together, and playing together. I can't claim this is my doing. I just sat back and watched it all happen. Sometimes I feel excluded, and I know Katie does, from their intense relationship. Don't worry, it isn't all rainbows and unicorns. They still have the typical sister/brother spates. Teresa gets annoyed with Sam's hovering and his need to control things, which winds up hurting his feelings. And sometimes Sam needs his space and can't explain this well to Teresa and she winds up thinking he doesn't like her. But most of the time, they fit together like salt and pepper. They sleep over on each other's floors and stay up late giggling. It's not unusual for them to walk together hand in hand. When Teresa is sick, it is Sam she wants to comfort her. When Sam is looking for a partner in crime, his first choice is always Teresa. No matter what happens or is said, they are there for each other, strolling side by side and hand in hand.