Answer:
Relationship, personality characteristics
Step-by-step explanation:
The verb “ser” along with the verb “estar” are the equivalent of the verb “to be” in English. The verb ser is is mainly used to indicate occupation, nationality, origin, personality traits, characteristics in general, the time (days, dates, years, and the time on the clock), the general weather of a region and relationships; and it is conjugated like this: Yo soy, nosotros somos, tú eres, ustedes/ellos son, él/ella/eso es.
In the sentence, the first “ser” in “Marta es mi mamá” is being used to indicate the relationship that the speaker has with Marta, and the second verb in “es paciente” is being used to express a personality trait of Marta.