Now that image is interesting. Where do you find that? Shows that Avallach definitely isn't following her around for purely altruistic reasons.
It's one of the notes you can find scattered around in Avallac'h's lab.
But if you think about it, it is not that incriminating. Ciri already knew about his plan since she had consented to carry Auberon's child, and already knew that this plan had failed since Auberon's death. I trust that she also knew that Avallac'h would not give up so easily on her. Seems that the purpose of the note is to solve the mystery of why Avallac'h befriends Ciri in the game.
From my perspective what Avallac'h is trying to say on the note is that when he tries to push things on Ciri she reacts violently. However when he tries to reason with her she becomes cooperative. What astonishes him is the fact that Ciri is an idealist putting aside her personal interests and willing to fight for the greater good. A feature he identifies as Lara's. (Lara did not just run away with a filthy human, she also wanted to bring peace between elves and humans and her child was to become the symbol of that idea...)
Again depending on perspective, one can say that Avallac'h is exploiting Ciri's idealism. Only that in this case both Ciri and Avallac'h wish for the same thing i.e. to stop the White Frost and save not only the Aen Elle world but ALL worlds, because if Ciri with Avallac'h's help manages to stop the White Frost from expanding then the Aen Elle would not need to escape to her world. She will not need to open the Ard Gaethe for them and she would also stop the invasion and annihilation of her world. Fair enough...
Problem being that after the events in Tir na Lia, Ciri ceased to trust Avallac'h and to be able to succeed with all the above Avallac'h needed her unconditional trust. In the last sentence of his note he simply says that he will do anything possible to gain back her trust at any cost. (Even risking his own life to save her, even cooperating with humans and even turning against other Aen Elle such as Eredin and his golden child Caranthir! )
From my perspective this is altruistic.