Hope was worried about her cousin. Should she ignore the suspicious doings of someone so as not to hurt Rafe's feelings? Dario has lied to his brother, sister, Abby, and everyone else. He has committed crimes, big time felonies, He has deceived family, friends, while pretending to be this fine, upstanding young man. Rafe has ignored all the signs that Dario is up to no good, which is not like him at all.
Hope may not have mentioned anything to Rafe, hoping her uneasiness would come to nothing.
However, evidently she gets whatever it is to show Dario has been up to no good..........and then DOES tell Rafe, and it sounds like BEFORE any arrest, etc.