Hi there, I finished reading your comic so less go.
The beginning is really good as you quickly establish who's the main character, what's the situation and put in place the first conflict which is Valentina waiting for her friend to return. I like you have a larger cast, which means you have a great opportunity to develop the world and the characters through the interaction between them. There's this scene where the MC is woken up by another character and character development there is done really well. We get to see Valentina being the 'responsible one', telling Genevieve to go and get ready. Those kind of details really help build the realism of your world.
I will get into some technical stuff.
part 1: you have 'specially' instead of especially
part 5: 'the next morning' in there is not really needed, as you have a panel with Valentina waking up so we can make the assumption it's the next morning
part 6: you have 'in the table' instead of at the table
part 7: 'after eating' there is not required as you have Crystal saying 'thank you for the food' and leaving so we can make the connection
part 8: you have 'bury then in the past' instead of bury them in the past
part 12: the transition there from night to day is simply gorgeous. Not only does it realistically translate the passage of time, but it's just beautiful to look at
Right. Now let's talk character. I feel confused as to who is Valentina or why is she feeling/thinking the way she is. Even with how much we are shown about her thoughts and feelings, everything is either focused on how she feels or how Crystal is. In the beginning, the discovery of her having met Crystal before and the 'attempted murder' come out of left field. I am sure there's a good reason why that shared past exists and why there's that drama about Crystal trying to throw her off a building, but it's a lot of information to process. Then, for some reason, Valentina decides to help Crystal? I would understand if she accepted to help her because that's what she feel her duty as a doctor is, but she takes it personally - as if she wants to be friends with the person who tried to kill her. In the morning, however, she gets all suspicious about Crystal just because she doesn't want to see the chameleons. And this... Polarity in Valentina's actions and thoughts is really confusing to me. I understand people sometimes feel conflicted, but she simply seems to switch from one perspective/feeling to another in a matter of moments.
Also, because there is so much internal monologue and we spend so much time with Valentina's thoughts, we don't get to see her being developed through her interactions or the world. It goes like this: something happens, then Valentina goes off in her head about what just happened. I feel you can relay what she feels or how she thinks in a better way. We don't need to spend so much time with a character to empathize with them. Instead of having Valentina talking to herself after something bad happens, why not show her raiding the cupboard for chocolate or storming into the kitchen and getting annoyed at whoever is there, why not show her shuffling through a music playlist/TV channels with a frustrated expression on her face? My point is, instead of telling the reader how the character feels, show us how she feels and how that affects her interactions with the world and the other people around her. That way we don't feel we're in her head so much. You did something akin to what I'm referring to and that is the time she spends with the chameleons. Obviously, she's troubled, she has to work through stuff so she loses track of time while playing with the chameleons. That's a brilliant 'show, don't tell' example. Perhaps resort to that a bit more.
Aside from that, though, this has great potential. The mystery around Crystal is built really well and I like the dynamic between the two. Personally, I really love the chameleon idea - they are adorable and I love them, alright? Lol Thanks for sharing, it was real fun to read and Imma waiting for the next part! 