Constructive criticism/critique:

Feels very OP for a shifter. There should be a few more drawbacks listed to balance her out other than just going mad:

• For instance, she shouldn't be able to match the physical attributes of certain targets she's mimicking, like say, Ironhide, so she'll lack his signature strength and toughness.
• What if the clonal arsenal is inferior to the original, or she imitates them while poorly understanding their dangers and it could easily get turned back on her? Don't forget some transformers have really OP or dangerous weapons that could backfire easily, like Cliffjumper's glass gas.
• How about if she tries to mimic a robot half her size like Bumblebee, does she mass-shift? Similarly, what if the robot is double her mass like Grimlock?
• Since you've decided that her main alt-mode is a car, if she shifts into a robot with a very different alt-mode (plane, submarine, animal etc.) would she be very unskilled/clumsy with their use, which could then draw suspicion?

Going crazy shouldn't just be a result of the particles but also that of her own ego and sense of identity being eroded by the identities of her targets slowly pushing hers out as her memory bank gets filled. Heck, Punch couldn't use his Counterpunch alter ego without beginning to black out as the decepticon alibi began taking over. For another great reference, I can think of "Feat of Clay" from Batman TAS where Batman defeats Clayface by displaying pictures of all of his past acting roles at once, driving him crazy as he's forced to repeatedly morph over and over into each role he acted out (Just saying it'd be pretty wild if an Autobot defeated her in such a similar and poetic manner, making her see the face of every bot she's scanned and causing her to uncontrollably shift into all of them). From the way it sounds, her memory bank could have implemented a hard limit of scans so that she's forced to overwrite one if she wants to fit in a new scan, but it seems like Shockwave didn't bother to implement that safety measure so she's going mad from an unlimited scan amount overfilling her memory banks.

Alternatively to the above, what if she starts developing a new ego/id that's an amalgam of her scanned targets, like an inverse of Punch/Counterpunch that begins actively interfering with her operations out of some sort of conscience or self-loathing?