I think this scene is really important: In the first gif you can see that Tara is watching the group reunite with Carol. In the same gif at the end she turns her head immediatly to the wood. In the second gif you can see that she turns her head fromt left to right.
And why is she doing this? In case that there a walkers beind them or that people from terminus followed them, she can react and/or alert the group that there is something coming up.
She is the only person here who does that. Why? Not because she still feels guilty. She is doing this to protect her only family now.