Family diagnosis

After giving us long and detailed medical instructions:

Nurse: Carolyn, you have a great support team

Mom: <eyes closed, nods slightly>

Nurse: It's nice to see a family that is so clinically....

<really long pause>

Me: Insane?

Nurse: <laughing>Aware!

Me: Sorry, you seemed stuck.

Nurse: Oh Carolyn, does the sense of humor come from you?

Mom: <eyes still closed, manages a tiny smile and a nod>