I believe he clarifies that it wasn't intentional. He says that it wasn't in the plan for them to meet, it just happens that way.
Whut, in this chapter?? o_o
.... I don't remember seeing anything of the sort so I'm a bit confused xD
He claries towards the end that Kasia was a spy, but it wasn't her intention to betray Ernon. He even says that them meeting wasn't intentional. He tells Ernon that she had to send away her subordinate, because running into Ernon wasn't in the plan.
I think the only thing they say is:
Ernon: How did... Kasia find out I was going to appear there?
Tassell: She didn't. She was very surprised and barely managed to get her subordinate to escape.
Or sth along those lines. I don't think anything said here would be interpreted as "she didn't plan to approach you". Of course it's slightly, slightly hinting at it. But it never clearly talks about Kasia's original intentions. What Tassell says makes sense no matter what you think was Kasia's plan, although it does make more sense if you know it wasn't her plan to get to Ernon.
Sorry, I was really understanding whag you were saying. But I don't believe he twist the information, he even says he would like there to be a misunderstanding, but feels guilty about Kasia's feelings. Her mission was to get intel on his side, just from the backline though. He also confirms to Ernon her mission had nothing to with betraying Ernon trust. So I think he was pretty honest.
I'm kinda torn lol cause props to him for saying it was Kasia who wanted to save Ernon. But then again he did twist the original info and told him Kasia was sent to his side to get intel. Which isn't true at all. (`へ´ )
She did deceive him to get info but that wasn't the original plan at all. She only had the opportunity to do that (and in her position, no other logical choice really) because Ernon more or less kidnapped her. That piece of info is kinda crucial imo because it's necessary to understand the actual cause and effect of the situation. That is, Ernon would've never gotten deceived by Kasia if it weren't for Ernon himself kidnapping Kasia.
People should know when they're themselves part of the reason that sth they don't like happened (´▽｀)