She's a whack job ~ nuttier than a fruitcake ~ all of which is evident from her criminal track record, her occupation, and what her friends have to say about her ~ and you want me to think she's just running a con.
I'd suggest you get out more often; maybe volunteer at your local mental health outpatient clinic. Lots of folks coming in there need really basic help because being bipolar or depressed, or having certain neurological impairments can, combined with the medication administered to treat the symptoms, can make your life darned difficult ~
Please, stop with the helpless Crystal routine.
We are all presumed able to form intent. In adults, it is only when a mental defect is so severe, which neither bipolar nor depression are, but severe retardation or insanity would be, that the actor is deemed incapable of forming the requisite intent.
If Crystal's life is difficult, it's because she made it that way with bad judgment.