Doubt it. Wouldn't make sense to have such a literal adaptation of the comic to the movie screen. Might as well include the Shi'ar while we're at it.
Do I look like a psychologist/some doctor?

Obviously, I'm not going to give you a definition of insanity that you cannot google the internet yourself.
So no, I don't have to define anything before I talk about it, because NONE of us have the credentials to define insanity in the first place. Furthermore, even those with credentials cannot always agree on what they think insanity is, thus the issue being hotly debated in some circles. So asking for a definition of insanity among people who have no previous professional, medical history with insanity is utterly pointless.
If the experts cannot always agree, what makes you think that we will even scratch the surface of the issue?
I think you're just reaching now.
First, I'm not taking anything for granted. I may not have the credentials to define insanity, but what Jean is experiencing in X3 probably is insanity. There are split personalities, and each personality is apparently not aware of what the other is doing. Taking into account her behaviour, Jean goes from respected doctor and (from what we've seen) loving fiance, and progresses into a mass killer, murdering numerous people including her fiance. This jump into a mass killer was triggered with the manifestation of her other personality.
So no, I cannot define it. But I recognize her symptoms describing a person who obviously is not entirely sane. Whether she is diagnosed with any of the number of multiple personality disorders or schizophrenia or whatever, is irrelevent to the conversation. Actually, all other things are irrelevent - there's no need looking deeper than we have to, or else we'll just be chasing our tails around and around in circles and never catch it.
Simply taking into account her symptoms, AFAIK she is insane. Sane people don't have multiple personalities, and don't make the jump from saving lives as a doctor and killing lives as a mass murderer in a day. I don't see how I'm taking anything for granted with that statement.
Again, I think you're looking far deeper into this then is necessary.