@cellardur I don't think anyone has said Celeborn's sister can't interact with Aragorn or Elrond. However, I don't think it's at all plausible for them to spend large amounts of time with her when they're busy with warfare. That's often the nature of war.
When did this happen? Do you mean when he brought Gollum to Mirkwood? He was very busy with a lot of Ranger business and helping Gandalf
save the world. I doubt he had time to take a long, extended vacation with anybody. He seldom even visited his own mother.
As for Elrond visiting people in the Third Age, I suspect that a ringbearer cannot guard their valley against attacking armies while they aren't personally in it. Galadriel occasionally leaves Lothlorien for a Grey Council meeting, but she didn't go to Rivendell even to visit Celebrian when she was rescued from Orcs, and I think surely if Galadriel
could have visited her daughter, she would have. Instead, she was in Lorien using her ring to help Eorl's Ride to Calenardhon. So no, I don't think Elrond has the option for visits that aren't absolutely, unavoidably necessary for the war effort.
In the Second Age, Elrond was free to visit her and likely would have, at least before he became besieged in Rivendell c. 1697.