Emma must have woke him up crying. He went running into her room and I heard him saying "hiii Emma" through the monitor. He started talking to her and trying to comfort her (most likely putting his hand through the slats and patting her on the head like he does).
She started crying harder and I was making my way upstairs when I hear him run to the gate and yell down to us. "HEY! HEY! Baby crying!" Hahaha. Then when he sees me, he runs back to Emma and says, "it's ok baby" "it's ok sweetheart" like he hears me say to her.
Seriously the cutest. Sure, he's the toddler brother who hurts her sometimes (usually on accident since he's so not gentle), but he's also a total sweetheart who adores his baby sister. He loves to protect her and snuggle with her.