Both Aletha and her partner are getting equal amounts of outcome from their relationship. Aletha feels she is putting more into the relationship than her partner. According to equity theorists, Aletha is likely to feel:

dissatisfied because if she is contributing more, she should also be getting more out of the relationship than her partner does.

Explanation:

Equity theory: In psychology, the term "equity theory" is described as a concept that is based on the idea that a particular individual is being motivated through fairness, and in case if he or she figures out inequities in the output or input ratios related to himself or herself and his or her referent group or person, then the person will seek to adjust his or her input to reach or gain perceived equity.

Equity theorists are considered as proponents of the equity theory.

In the question above, Aletha is likely to feel dissatisfied because of her relationship.