Hinduism...Isnt Radha an imaginary deity?

There is no mention of Radha in any Vedas and clical Puranas. There is nothing ociated with her other than being an admirer of Krishna. Even Srimad Bhagavatam does not mention the name of Radha or ociate any importance to her. But as of today, there are many mislead cults who think that Radha is the consort of Krishna and she is supreme to other gods. Isnt Radha an imaginary deity, since no authorities of Hinduism mention about her. Your opinion...