There's a few more spots, but they're options I imagine most people picking by default anyway on a blind playthrough. In ch1, being friendly with Nathan gives you +1 point, as does telling you truth later in that scene (about drinking). Picking truth when Alice asks you also gives +1.
In ch2, deciding to do the photo task yourself leads you to a scene with Rachael and Alice, apologizing to Alice after you walk in on her gives you +1.
Then in ch3 inviting her and Rachael to your table in the library doesn't give you any bonus points, but gives you an extra conversational scene involving her and also will influence future interactions.
Interestingly, Ellie is probably the second slowest burn, so it seems you've got a type in that regard.