kinda lost interest

Actually, she was canonically the strongest being in her realm, which is why her brother and the dragon both obeyed her. She also teleported two people back in time, did it again for Karsus, and as you said, saved the orphanage and sent the dragon back. Karsus is also more of a side main character and most of her development relies on him, so her seeming weaker might be because Karsus has a lot of scenes to develop his skills and power.

My impression from reading the story was that being a sorcerer didn't necessarily mean you were strong since you could specialize in non offensive magic and not know a single offensive spell. For instance, Arkana is known as a great sorcerer that specializes in teleportation. He is never referred to as a great warrior. When a big monster needs to be defeated, they call the masters, not the sorcerers. Plus all sorcerers (except Arkana and Sica) stay in the tower dedicating their whole lives to research, not fighting. Sica is indeed good support as a sorceress and she can handle herself in a fight with her magic which easily puts her in the top 5. Her beast side was what truly made her fearsome. In the end though, the story was never about Sica being a badass fighter or about showing the full extent of her power. That was never how she was portrayed

Actually she did multiple times at the start it is what I think is pointless is her losing the dark part of her not excepting it that give me disappointment and I think that made her weaker because she no longer has that but I don’t agree with you and that part that she was in helpful

No reality upon him, we could but in reality it’s just that he has more sense in the real world because remember she was cooped up in a tower for like how many years most of her life like 20 and then she finally came out and decided to fight a bunch monsters but she had no capability of that stuff yet so it was more like her having to develop the criteria well the other guy already had it and just finessed what he already had