I feel kind of nervous thinking about Summer tonight. This is weird.
So, let's talk about her a little.
I noticed in one photo she was wearing a Frozen shirt that said Sisters and showed Anna and Elsa. One time, when CB was recounting the part about asking the boys to watch Summer, she called Summer "Sissy". That is a cute nickname.
Someone mentioned Summer seemed as if she wished she could ride the motorbikes like the boys. When CB was showing them to CM she gave the hp. So, we can guess which bike went to which boy, kinda. I know this is about the brothers, but still.
CB says Summer liked the dolls with the big eyes. She didn't know what they were called, she just bought them when Summer asked.