Sorry about a bit blurry bottom gif (camera isn’t zoomed to Sookie), but she seems to be watching Pam very intensively. Maybe really trying to understand her ?
Well from the last time Sookie visited her in Fangtasia, Pam has done a 180, where Tara is concerned. And Sookie just goes with the flow! What I am hoping to see this season is Pam letting go of the animosity. She has two reasons to do so now.
Sookie is always very careful when she spots Eric and Pam externalizing affection for each other. I don’t know if she’s a bit jealous of the special bond that Pam shares with Eric, or if she’s so attentive because she wants to know more about Eric’s world, his feelings for his progeny etc. Maybe it’s a bit of both. She did the same with Godric in 2x09, she stayed quiet with her eyes focused on Eric and almost took mentally notice of every reaction he had for his Maker. In this particular scene, Sookie knew about the rift between Eric and Pam after the necromancer fiasco - Pam even asked her to talk Eric out of his anger, earlier in the season - and I’m sure she is noticing how Eric isn’t mad at Pam anymore, and how it only took them a mutual glance to set things right - no words, no apologies, no explanations but only a stare in each other’s eyes.
I’m sure these little exchanges between Pam and Eric are helping Sookie connecting the dots about who Eric really is at his core.
I think you make a good point about how Sookie tends to watch Eric interact with those he cares about. I think it confuses her because it seems so contrary to how the persona he portrays. Even though she saw the essence of Eric when he had amnesia, I think this moment with Pam in season 5 supports all that Sookie learned about him in Season 4.