Ask me 
5, 15, 16 :0
4, 7
5 - They tend to trust people fairly easily, but they also like to collect information about people. If they found things that didn't make sense they'd start trying to figure out where the mismatch is, but they'd basically trust people until someone gives them a reason not to.
4 - Sort of in the above, but they can read minds, so they trust people until they have a reason to stop
15 - I like to think it's what they thought of on the spot. They think about things a lot, but they don't, like, actually rehearse things in their head. Also, they might overthink things because I overthink things and can stare at tags for a while before I come up with something I like
16 - Nothing, really. They've probably seen people die in some pretty gruesome ways, and they can't really feel things like nausea
7 - Things that remind them of the Rift might trigger nostalgia for them. They don't really miss their past, because they prefer their life on the Barge to their life in their world, but they like the idea of going back to their world and dealing with things from their past. I don't know if they'd recognize nostalgia easily, but I think they might like it.
