Again, the mindset thing isn't an issue at all, we've seen it numerous times in the series. Some break through it and achieve greater heights (Yuji, Gojo etc) others never do (Nanami).
But the execution of her becoming free is bad. With Todo and Yuji, we got Todo's introduction an arc before he fought with Yuji, and then a couple of chapters of them fighting and talking. For Gojo it was his own breakthrough, by himself, due to being near death.
For Maki we get a rushed introduction of two powerhouses who somehow just fit the mold of who she needs as a teacher.
An equivalent of that would have been if Kusakabe was introduced in the Sister School Event, and in the next chapter he teaches Yuji how to fight without a CT. Or if Todo didn't have a CT but was a prodigy in using CE so he's the perfect teacher for Yuji. And all that so Yuji can transcend and be the equivalent of some former sorcerer.
Maki needs to distance herself from Toji as a character. It doesn't help that they have the same sword, same look, and now are outright said to be the same.