According to horney, a person who becomes extremely dependent on other people is

i believe the answer is: is using this interpersonal style to avoid feelings of anxiety.

Interpersonal style refers to the method of communication that create a certain level of expectations between the giver and receiver of the message. Some people used this style incorrectly to make other people feel obligated to do the others a favour, which might be used by that other person to handles their problem without making any efforts.