Because she's so attuned to the needs of her guests and her family (or because a helpful producer pointed the way to the next intriguing subplot), Trista takes notice and approaches HRWES, asking if her sister is okay. HRWES shoots back that Jackie feels a little out of the whole celebration, and confessionalizes to us, "On the one hand, I can tell that Jackie is feeling emotional and I'm saddened to see that. On the other hand, I'm immensely elated that Trista is as happy as she is." On the one hand, awwwww. And, on the other hand, ouch.
But a father's work is never done, even when it's merely the emotional stability of his second favorite child at stake. He takes his distraught daughter aside, and they walk toward Sad Beach (the opposite direction he walked with Trista just a few choppy moments ago), where he puts his arm around her and asks what's wrong. Jackie doesn't like being "so young" and "not knowing anything." He tells her that "those people" would be totally willing to talk to her. Dude, they've been drinking since they stepped off the plane in New York. That Pete dude would probably talk to a shoe if it had an interesting enough pickup line (I imagine "I'm a shoe!" would even qualify). Jackie wails that she doesn't want them to be forced to talk to her, and HRWES tells her to strike up a conversation and, well, see what happens! And, in her defense, I know many people who have felt exactly this way before. And, on the other hand, once they turned twelve, these feelings usually started to recede somewhat.