I may be in the minority, but I really sympathize w/Molly. IMO, she has not been bratty or screechy or annoying. She's a concerned girlfriend worried about her boyfriend. If it hadn't been for Molly, I doubt Jordan would have even clued in on the fact that TJ was missing and had been abducted!
Molly and TJ live together. They have been in a relationship for 10 years. She knows him and how he behaves. This "ghosting" is unusual and concerning to her. Molly turned down marriage, not TJ. She made it clear she had no interest in marrying anyone and didn't believe in the institution of marriage, so her refusal had nothing to do w/her relationship w/TJ. She loves him and made that clear. That said, I completely understood why TJ was upset, and I can understand if he decided he couldn't be w/her anymore b/c marriage is something he values and wants in his life. That's all fine. Molly understands that too, but it has been several days (maybe weeks) since the proposal, and she still has not seen or heard from him.
TJ has disappeared. Molly has been told by Jordan that TJ has left b/c he's upset about the proposal and Molly's answer, so naturally, Molly wants to speak to him and to better explain herself. She never thought he would just "ghost" her and his entire life b/c she turned down his proposal. That is not like him, which is why she's been concerned. Plus, when you live w/someone, it is only common courtesy, IMO at least, to let your roommate/partner/spouse know where you are or that you are not coming home. I'm a worrier, and if my boyfriend got upset w/me, left, and never returned, I would be very worried that he was hurt or dead or something. And practically speaking - Molly does need to hear from TJ. They live together and split the bills I assume. Rent may be coming due, and is she now paying that on her own?
Anyway, Molly has been focused on the proposal b/c that's the reason she's been given by Jordan who is presumably in close contact w/TJ. What else is she supposed to think? Today, Jordan made it even more clear that TJ wants nothing to do w/Molly, and is gone b/c of Molly's refusal to marry him. Jordan was needlessly cruel to her, and 'm at a loss as to what Molly is supposed to be doing. Is she just supposed to move on w/her life and wait patiently for TJ to call. Maybe if a couple of days had passed, but I believe weeks have gone by. At this point, Jordan should be expecting her to be around, demanding answers. All Molly wanted to do was speak to TJ or hear from him directly. I don't see how that is immature or bratty. Honestly, if Jordan had sent Molly a fake text from TJ, Molly might have been satisfied. Jordan has done nothing to ease Molly's legitimate fears.