Okay, too many posts for direct quotes, so I'll just make a final general post on the topic, on my part.
First of all, I never claimed that the Yen/Ciri relationship couldn't be done better, my argument is that it is not necessary to do so, because the Yen/Ciri relationship is not the focus of the game's story. That is simple fact, not an assertion, and cannot be denied. Therefore, nobody is ignoring this here or unwilling to acknowledge it, just saying that you don't have a strong argument as a motivation as to why it should have been explored further. The only argument here is personal preference, which is not a valid one, when it comes to design decisions.
One argument that you have tried to push is that the game does not make it clear that Yen is a mother figure to Ciri. Again, a weak argument, there are plenty of examples in the games where this relationship is shown, claiming otherwise is factually incorrect (a few examples off the top of my head - Yen and Geralt talking about Ciri in Vizima, Geralt recalling how Ciri called Yen mother in the dreamer quest, Yen's general attitude towards Ciri and the importance of finding her, Kaer Morhen scene, Avallac'h lab scene etc. etc. - and these are just the obvious indications). This is all the game needs to establish, anything beyond that, understanding the full depth of the Yen/Ciri relationship, is not something that is required of the game to provide, in order for new players to understand the main plot. Knowing these details is a bonus for those who have read the books and have a better understanding of the characters, which enriches the experience, but it is by no means necessary.
For this reason, I am led to believe that this is not useful, constructive feedback, but an attempt to force the developers into adding extra content, because of personal preference on your part. Now, again, you are absolutely 100% free to ask for this, but attempting to obfuscate it as feedback and make it seem like it is owed to you, because the devs failed to present the general outlines of the relationship is not honest. Just keep in mind, the same claim could be made for any other character or story thread in the game - everything could always be done better - everyone has their own preference, so you are in no position to expect this particular story thread to be given extra attention.