If we look at the Veda Mantra for Sukra , there is direct mention about IndrANI and Indra.
indrANi mA sunArishu supatnI mahamaSravam
na hasyA aparanjana jarasA marate pati:
indram vo viSvataspari havAmahe janebhya:
Indra occupies the exalted status among all devas, being their supreme leader. He does not die of old age.
IndrANI, the dharma PatnI of Indra is the greatest of all pativratAs.
Both Indra and IndrANI are propitiated as adhi devatA and Pratyadhi DevatA respectively to invoke the blessings of Sukra.