Short answers, pulled from the story.
Queen Maya was the daughter of Devadaha, a king who ruled a neighboring territory. She became the wife of King Śuddhodana, making her Queen of Shakya. The couple were cousins because Maya's father was Śuddhodana's uncle.
Māyā gave birth approximately 563 BCE following a vivid dream on one full moon night. The pregnancy lasted ten lunar months before the child arrived after the white elephant entered her womb through her right side.
Most Buddhist literature holds that Queen Māyā died seven days after the Buddha's birth. She was reborn as a male deva named Māyādevaputta in Tusita heaven or Tāvatiñsa instead.
Queen Māyā died seven days after the Buddha's birth which is a pattern for all mothers of Buddhas in the tradition. Her sister Prajāpatī became the child's foster mother immediately after death so Maya did not raise her son.
Seven years after the Buddha's enlightenment he visited his mother in heaven for three months during which he taught the Dharma. He preached the Abhidharma specifically to her while she resided in Tavatimsa Heaven.