Mary has been married for $20$ years and describes how her husband has been verbally abusive toward her for most of that time. She indicates that her husband has had multiple affairs with other women, but she can't leave him because she "loves and needs him." When challenged by the interviewer regarding the wisdom of staying with such a man, Mary agrees with the interviewer, although she later confides that she always agrees with everyone to avoid conflict and disapproval. Mary should be diagnosed with $\_\_\_\_\_\_\_\_\_\_\_\_$ personality disorder.