[@Renny] Here's what I have that might remedy the problems you had with my cs. Hope this makes things better?

First point: In terms of her nen ability, I could always restrict it to three or four tarot cards at first, and then slowly expand her arsenal to just the major arcana? Not only would she have to train herself to transmute her nen correctly (similarly to Killua who had to electrocute himself), she would also need to research the tarot card she's trying to emulate?
In terms of the Hunter Exam, would it be possible to say that she failed the exam multiple times (maybe four or five times) before finally passing? That way, I could say that she built up strength and power from the exams and that's why she's as strong as she is now? And when she finally passes, it's more like she did average/below average in all the phases? Or would that idea not be a good idea?

I kinda want to put her around Kurapika's level more so than Gon/Killua.

Second point: I made the age unknown because she wouldn't technically know how old she is, but I could always put one if it's helpful? ^^

Third point: You put a negative symbol, but said that the Nen ability and personality are fitting? I'm not sure what to take from that?