Shortly after I sit down, I get into this hand v villain: https://play.globalpoker.com/poker-client/poker/10/hand/5b9664a8aa4b05166a117c39

Standard stackoff, obviously. A few hands later, this comes up: https://play.globalpoker.com/poker-client/poker/10/hand/5b966506aa4b05166a117c3a

I'm betting flop and turn for value but when the turn is x/r to the sizing, I have to think that this is a fold with QJo. Villain has KJ, AJ, JJ, 55, 77, 57, etc in his range and it's hard to imagine that they're doing this with less than JT. Considering the sizing, we'd be playing for stacks and I thought that would be getting a bit out of line here. Thoughts?

Last hand, same villain: https://play.globalpoker.com/poker-client/poker/10/hand/5b966625aa4b05166a117c3f

Here, when the pot size is so small on the river and v donks that large, I thought the most +ev play would be to simply call and close the action, almost definitely ahead of villain. If I was to try and generate more value and raise, this gives villain a chance to shove and put me in a difficult spot where I have the 3rd nuts but v could very easily have Kxs and Axs in their range. Additional thoughts?

Of course I want to maximize value but I also don't want to unnecessarily risk chips against the same person I just won chips from. Villain is a whale and did just call down, call down, call down but their donk bluffs vs other players were usually around pot size and I just thought these two hands were, as said, potentially extremely risky if played otherwise.

Thanks