Although the painting seems to tell a distorted legend, the description does mention Mary's parents, Joachim and Hannah. Also, the description also mentions that Mary and Elizabeth are (distant) cousins.
P.1632 - §4 Soon after the setting of the sun, as Jesus and the apostles still lingered about the supper table, Peter's wife heard voices in the front yard and, on going to the door, saw a large company of sick folks assembling, and that the road from Capernaum was crowded by those who were on their way to seek healing at Jesus' hands. On seeing this sight, she went at once and informed her husband, who told Jesus.
P.1632 - §7 A voice from the front yard exclaimed: "Master, speak the word, restore our health, heal our diseases, and save our souls." No sooner had these words been uttered than a vast retinue of seraphim, physical controllers, Life Carriers, and midwayers, such as always attended this incarnated Creator of a universe, made themselves ready to act with creative power should their Sovereign give the signal. This was one of those moments in the earth career of Jesus in which divine wisdom and human compassion were so interlocked in the judgment of the Son of Man that he sought refuge in appeal to his Father's will.
Luke 4:
38 Jesus
left the synagogue and went to the home of Simon. Now Simon's mother-in-law
was suffering from a high fever, and they asked Jesus to help her. 39
So he bent over her and rebuked the fever, and it left her. She got up
at once and began to wait on them. 40 When the sun was setting, the people
brought to Jesus all who had various kinds of sickness, and laying his
hands on each one, he healed them.
