And at the end of The Traitor Queen, Dannyl realising that he still has feelings for Tayend, and they may work it out eventually.
Rothen's anguished declaration at Akkarin and Sonea's trial in The High Lord. It's also a Tear Jerker, because he's been suffering so long and doesn't stop Sonea being sent to Sachaka. But it's heartwarming because it shows just how much he loves Sonea, and his Papa Wolf side.
Rothen refusing to tear Sonea's robes when she's expelled.
Dorrien and Sonea scheming to reveal Regin's lies, especially since he's the first real friend Sonea has made since arriving at the Guild.
The Guild's treatment of Farand and Kaslie. The Guild could all have legally put them to death for their crimes of learning magic outside the Guild and researching Black Magic. But recognising that Farand was merely a victim who'd been pushed into his crimes by the Elyne King and his brother in law the Dem Marane, they instead offer him a place within the Guild. And although they execute the Dem Marane, they spare his wife Kaslie so that their children are not orphaned, and because Kaslie merely wanted to protect Farand.
Strangely enough, Sonea ending up with Regin as adults. Despite the experiences of their youth, he's grown into a decent human being, and Sonea finally considers allowing herself to enjoy life, not be constrained by the rules against Black Magicians. It's also the first obvious time she's moved on since Akkarin, and provides a clear note to contrast the end of the first trilogy.