When Haley goes to leave Nathan's room, the door is closed. The scene cuts to Nathan and when it cuts back to Haley the door is open.
Haley is seen making a collect call to Nathan, then a scene with Chris and Nathan is shown, then back to Haley hanging up the phone. Brooke is happy that Nathan is coming to bail them out, and Haley says she shouldn't get in touch with Nathan so she called Lucas. Brooke was in the same cell as Haley, there is no way she didn't notice that Haley hung up and made another call to Lucas.