Within this world, Caitanya Mahaprabhu had three and a half very confidential devotees. The three were Svarupa Gosani, Sri Ramananda Raya and Sikhi Mahiti, and Sikhi Mahiti's sister, Madhavidevi, being a woman, was considered the half

Expressions researched:
"Within this world, Caitanya Mahaprabhu had three and a half very confidential devotees. The three were Svarupa Gosani, Sri Ramananda Raya and Sikhi Mahiti, and Sikhi Mahiti's sister, Madhavidevi, being a woman, was considered the half"

CC Adi-lila

Within this world, Caitanya Mahāprabhu had three and a half very confidential devotees. The three were Svarūpa Gosāñi, Śrī Rāmānanda Rāya and Śikhi Māhiti, and Śikhi Māhiti's sister, Mādhavīdevī, being a woman, was considered the half. Thus it is known that Śrī Caitanya Mahāprabhu had three and a half confidential devotees.

CC Adi 10.137, Translation and Purport:

Mādhavīdevī, the seventeenth of the prominent devotees, was the younger sister of Śikhi Māhiti. She is considered to have formerly been a maidservant of Śrīmatī Rādhārāṇī.

In the Antya-līlā of Caitanya-caritāmṛta, Chapter Two, verses 104–106, there is a description of Mādhavīdevī. Śrī Caitanya Mahāprabhu considered her one of the maidservants of Śrīmatī Rādhārāṇī. Within this world, Caitanya Mahāprabhu had three and a half very confidential devotees. The three were Svarūpa Gosāñi, Śrī Rāmānanda Rāya and Śikhi Māhiti, and Śikhi Māhiti's sister, Mādhavīdevī, being a woman, was considered the half. Thus it is known that Śrī Caitanya Mahāprabhu had three and a half confidential devotees.