Not exactly. I don't understand the reason behind, but JJ seems to prefer not to leave MC behind for good.
I would quess it's plot. Without JJ waiting nice and patiently for PC next to each probe to try act like all mighty villain and then go first toward next probe it could end up with PC been 1-2 plot planets behind too fast. Especialy with all this "distractions" that seems to affect PC all the time while JJ seems to outright ignore them instead going straight away for each probe.
Solution would be making JJ finding each next probe in certain timeframe but...that will mean PC isn't as it was pointed "a rich kid in sandbox" but must actualy pay attention to passing by time ingame to not miss time when JJ would reach next probe or we can forever been stuck at this particular plot planet. And putting any sort of time limitations on PC is something we would never see. But without them JJ would have hard time to looks like true villain.
@IVIysterious Person Isn't it a fragment from your fanfic about Jill?