There are no attestations of Rindr in the poetic Edda.
Chapter 27-34(p. 26): Rind is introduced as the mother of Vali by Odin.
‘Ali or Vali is the name of one, the son of Odin and Rind. He is bold in battles and a very good shot.
Chapter 35-37(p. 31): Rind is reckoned among the Asyniur (goddesses).
Thor’s mother Iord and Vali’s mother Rind are reckoned among the Asyniur.
Chapter 2(p.68): A verse by the poet Steinthor notes that Odin won Rind through magic.
The land-getter, who binds the mast-top straight, honours the provider of the deities’ fiord [the mead of poetry] with a head-band. Ygg [Odin] won Rind by spells.
Chapter 8-16(p.76): A kenning for Vali is "son of Odin and Rind."
How shall Vali be referred to? By calling him son of Odin and Rind, stepson of Frigg, brother of the Æsir, Baldr’s avenging As, enemy of Hod and his slayer...
Chapter 18-22(p.86): In a list of kennings for Frigg, she is called a "rival of... Rind."
How shall Frigg be referred to? By calling her daughter of Fiorgyn, wife of Odin, mother of Baldr, rival of Iord and Rind and Gunnlod and Gerd...
Chapter 23-24(p.90-91): In a list of kennings for Earth, she is also called a "rival of... Rind."
How shall earth be referred to? By calling it Ymir’s flesh and mother of Thor [...] rival of Frigg and Rind and Gunnlod... […]
The spear-shy [unwarlike] wretch kept far off when the battle-gleam-[sword-]impeller [warrior, ruler] once took Rind’s rival [lord, the land] without bride-price [by violence].
Chapter 54-56(p.133): A verse by the poet Kormak notes that Odin won Rind through magic, is the same as the one from Steinthor.
The land-getter, who binds the straight mast-top, honours the provider of the deities’ fiord [the mead of poetry] with ahead-band. Ygg [Odin] won Rind by spells.
Chapter 75(p.157): Rind is named in a systematic list of the Asyniur.
Hlin and Nanna, Hnoss, Rind and Siofn, Sol and Saga, Sigyn and Vor.