We watch her in season 1 having a massive existential breakdown about her body not aging with her, looking down the barrel of a lonely torturous eternity condemned to the body of a child, with the two men responsible for said existence as her only companions. Then they can't even to be bothered to comfort her about it properly. Instead they treat her dismissively or with rage or helplessness when she mentally ages out of her own body, her grief and behavior becomes erratic and endangering, but she can't pretend to be a child for them to control anymore.
To escape the parent and child dynamic they've been keeping her in, she leaves, goes out on her own to discover herself away from them, seeking knowledge about vampirism that Lestat refused to teach her (common young adult leaving for an out of state college experience tbh).
Then she meets Bruce, another vampire she's briefly excited to meet and share experiences with, and then those feeling are immediately shattered, she's physically overpowered, held captive, and repeatedly assaulted. She's left traumatized and furious and drained of all the hope she'd left home with.
Bruce is a nothing piece of shit and she knows it, but he leaves her with the shame of feeling gullible and weak and unsafe. She's furious at herself for letting her guard down enough to have him blindside her, and most of all for having the belief taken from her, that she could be strong enough on her own without needing someone else there to protect her.
It's because she knows she needs someone that she goes home. She didn't even have Louis in her mind specifically, but she watches him say goodbye to Grace, understands that she'd been turned to fill the loss of his family, and that because of that he needs her. Louis, who after 7 years apart, lets her know as soon as she's home that she'd been missed, and he needs her, and is at such a low place in his life with Lestat that he's finally willing to fight for her and leave him.
Whereas Lestat, had grown resentful of Louis' blame and depression around Claudia's leaving, and we know hates to be left and abandoned himself. He greets her with a cruel indifference, taunting what he did know about her assault, like it meant nothing to him that she'd left and had been hurt, but then turns rageful and violent when she say's she's here to leave again and take Louis with her.
He then cements Claudia choosing Louis over him as her target companion, when he rejects her as a fledgling. When he tells her that he'd never wanted her, and turning her had only ever been something he did for Louis.
He uses the cloud gift, revealing that he'd been concealing yet another huge part of vampirism from them, and uses it to crumple Louis in front of her, leaving him entirely dependent on Claudia's care, after she herself had just been abused by a stronger violent vampire and come home to collect a companion so she could continue her research and travel safely. Lestat crippling Louis takes that away from her, traumatizes her even more, and binds them to New Orleans for another 3 years while Louis heals.
It's when Lestat worms his way back into Louis's heart and convinces him to give him another chance in their lives, that Claudia knows she needs to make a plan of action. An escape that'll get her out of their never ending cycle of abuse and forgiveness, and put her in control of her life.
That means lying to and manipulating Louis, keeping him in the dark on the details of her plan cause she knew he was more loyal to Lestat than her.
She did whatever it took to make sure that when it came down to killing Lestat, Louis would believe it's justified, and wouldn't try to stop her. Making him believe Lestat was going to either leave him or hurt her.
Then Lestat, a paranoid and reactive deceiver himself, steps right into her trap, lashing out with behavior that reinforced the story she was feeding Louis.
She was smart, she was cunning, and she put herself first when no one else would! I love her for it!