She only goes there if she completed the 4th task.
Then there are 2 previous events that *could* influence what is gonna happen in this event with Aiden:
- whether she intervene or not in the bonus scene
day20_Sophia_prevented_Andre_Aiden_having_sex_with_Jen
(intervene) or
day20_Sophia_saw_Aiden_Andre_with_Jen_having_sex
(stay out of this)
- whether she ask help to Morello or not (and based on the previous choice that could include Jennifer, who is not there)
day20_Sophia_asked_Don_Morello_for_help
André will be still pissed for the slap, Aiden for the possible intervention during the bonus event.
Now it seems that this could be the 5th task, something could happen if she decides to meet them.
Or, as usual, Aiden may ask something to have fun with the others and then give her a task for the next time either in school or elsewhere. At the moment everything is open.
It's listed as "meeting Aiden", so it could go either way, he didn't listed as "5th task" to avoid spoilers or it's just the meeting with some "side action".