"do not confuse sensation with emotion" - I'm not sure Bertrand makes that distinction and I admit I don't know what you mean exactly. I checked wikidiff (https://wikidiff.com/sensation/emotion) and saw the definition "sensation = physical feeling or perception from something that comes into contact with the body". If that is what you meant (sensations are "things" coming "outside of ourselves") then I don't think solipsists agree that such sensations exist (because there is nothing outside to cause them).

"they are two very different things." - please elaborate, maybe we have different definitions of the words.

"'that hurt' did it produce pain? or did it purposely manipulate the subject emotionally to cause pain." - again, Bertrand (playing the role of devil's advocate) could say: there might be no "it" to "produce pain" or "purposely manipulate ..." All we have is a sensation/emotion/feeling/perception of pain itself.

"is it correct to presume this manipulation benign or innocent considering the influence it has? (...)" - that and the whole paragraph went way above my head. No matter how I try I can't grasp what you meant, could you please provide more details?

Yeah ;) Bertrand could have replied (although I don't think he was a solipsist) that "undoubtedly it APPEARS to you that it is sunny outside. Certainly you EXPERIENCE that or you HAVE THAT SENSATION. But whether there is a sun outside is whole other debate. You might be living in Matrix!" Ok, Bertrand wouldn't say the last bit as he didn't live to see the movie ;D