holding that non-outsider status is immaterial where the allegations in the complaint show defendants’ motives for procuring the plaintiff’s termination were unrelated to their business interest | holding that plaintiffs complaint stated a valid claim against defendant for “wrongfully discharging her from her employment in retaliation for her refusal to testify falsely or incompletely” | plaintiff's moving from Michigan to North Carolina to accept position with defendant was additional consideration which took contract out of traditional employment-at-will rule | plaintiffs moving from Michigan to North Carolina to accept position with defendant was additional consideration which took contract out of traditional employment-at-will rule | trial court properly dismissed wrongful discharge and breach of contract claims against individual defendants where plaintiff alleged her employment contract was with Duke University rather than with individual defendants | complaint must admit of no other motive for interference other than malice | termination for refusal to testify falsely or incompletely at medical malpractice trial | allegations (1) that plaintiff was assured by employer “she could only be discharged for incompetence, [(2) and that] these assurances induced her to move here from Michigan in order to accept the job offer, and [(3 | employee discharged after giving truthful deposition testimony