I apologize if I came off as judgmental, that was not my intention at all. My DD also does not self initiate. My older DD had a pack of running buddies at that age and they would always be off doing something fun together, I felt bad for younger DD for not having this experience, but I found if I did not plan out activities or play dates for her, nothing would happen. TBH, I am not sure younger DD even enjoyed hanging out with her age peers like her sister did (maybe because they weren't really intellectual peers)

I also think some people just thrive on structure.