For context: we used to co-sleep, on and off when kids were small. One of mine saw a therapist for some issues as a very young child--i.e. around first grade. One of the questions both pediatrician AND therapist really harped on was sleeping arrangements. To the point I personally found it intrusive and over the top...BUT I am sharing this because I cannot FATHOM any provider being accepting of the sleeping arrangements in the Soto household.
I think even if MS had said something like she "occasionally was scared and slept with mom" they would have been all over it. (Edited to clarify--because of her age) So, SS AND JS must have been on the poor kid to keep "family secrets. I doubt poor MS could really talk with her therapist candidly at all.
JMO!