Visit With Old Roommate

We visited my friend Karin who I used to work with and we also had an apartment together before your dad and I got married. I tried explaining that to you, Emma, but you just gave me a funny look. Karin has a daughter, Lauren, the same age as Emma and a son, Nathan, the same age as Ben. How cool is that?! She also has an older daughter, Kelsey, that Emma kept bugging and wanted to hang out in her cool room.