The History of Humāyūn (Gulbadan Begam) 158: OLXVII. Shah Begam Badakhshi.

158

The princess of royal blood.
She was one of six daughters of Shah Sultan Muhammad, King of Badakhshan, the last of a long line of hereditary rulers of his country who claimed descent from Alexander of Macedon. Her mother was a sister of Sultan Sanjar.
She was given in marriage to Yunas Khan Chaghatāi and was the mother of Mahmud and Ahmad Khans and of Sultan-nigar and Daulat Khanams. She was widowed in 892 H. (1487), and survived Yunas more than twenty years.
She dwelt in Mughalistan with her elder son, Mahmud, the then Khaqan of the Mughals, from the time of Yunas’ death until about 911 H. (1507-8). Then "base advisers provoked a quarrel between the mother and son — a son so obedient that he had never even mounted for a ride without her permission. They [the base advisers] decided to send Shah Begam to Shahi Beg Khan to solicit a country for herself, because she found living in Mughalistan distasteful. Now, as the Begam was a very sensible woman, she went under this pretext, and thus left her son before these base advisers could bring about an open rupture which would have caused endless scandal and reproach to herself. The rumour was that she had gone to entreat Shahi Beg Khan while she was really enjoying in Samarqand the company of her children." (Trs. Rash., E. & D., 180.)
Shahi Beg did not permit her to remain in Samarqand but banished her to Khurasan. From Khurasan she went with other connections and relations to Babar in Kabul. They arrived early in 911 H. (June, 1505), during the ceremonial mourning for Babar’s mother, Shah Begam’s stepdaughter. With Shah Begam was Haidar Mirza’s father and also Babar’s aunt, Mihr-nigar. Haidar says that Babar gave the party a warm welcome and showed them all possible Kichak, she was the wife of Sharifu-d-din Husain. (cf. Kichak.)
She was at the Mystic Feast.
Gul-badan, 246.