No problem, Ruby Vee. This type of behavior wreaks havoc even in psychiatric facilities, especially amongst those who aren't yet adept at identifying it. As someone else mentioned - you're in trouble if this type of patient can make you feel like a terrible nurse, but in worse trouble if they make you feel like an awesome nurse. We should not be basing our professional evaluations of our skills off whether or not a patient prefers and/or "likes" us. We should always be kind, compassionate, and professional. That does not mean throwing an entire unit into chaos on the whims of one person who has a perfectly acceptable alternative solution available to them. Don't engage in their attempts to trash talk your coworkers, but also don't engage in their efforts to pit you against them by "favoring" one, either. Pro-tip: They will run their favorite to death if allowed. Be watchful over new grads especially in these situations.
To be fair, it's not just seen in Borderline personality disorder, although it is one of the characteristic traits associated with that Axis 2 diagnosis. One should also remember that personality disorders are not all or nothing - they exist on a spectrum of severity, with some coping much better and living functional lives in spite of them. Patients with Cluster B disorders, in general, that are not well managed tend to be time consuming and exhausting.