@TheWindel If they were still in the same room, or even building, with you, I'd agree. But you told a bunch of people to leave, and then "sensed" that them leaving was them getting killed/captured instead of you know, just leaving to do what you told them to do. How would she know Artoria had been captured without ESP? How would she know Frog had went to heaven after leaving?
And before you say "but it's not really even a real power" I will point to how many people got winged/killed by snipers in the last battle who could have REALLY used ESP.