viśākhā narma sakhyena sukhitā tad gatātmikā
viśākhā prāṇa dīpālī nirmañchya nakha candrikā

She’s very happy with Viśākhā’s intimate friendship, Her life is dedicated to Viśākhā, and the moon-like splendour of Her nails is worshipped by the wicks of Viśākhā’s life-airs (heart).”

Stavāmṛta Kaṇā Vyākhyā:

The river of Śrīla Raghunātha dāsa Gosvāmī’s poetry, which is filled with the nectar of Premamayī Śrī Vārṣabhānavī’s forms, qualities and pastimes, floods the shores of the rāga-devotees’ hearts with its nectarean rasa, and flows on forcefully without interruption to meet the lotus feet of Śrī Rādhā, which are the ultimate ocean of mahā bhāva.

Because of the great absorption of Śrīpāda Raghunātha, who is śrī rādhā-tattva mantra-draṣṭā ṛṣi – “A seer who can counsel on the truth about Śrī Rādhā.” – Premamayī gives shelter to his words and manifests Herself in them, and by reading these words the practising devotee can become blessed with the experience of mahā bhāva.

Here Śrī Raghunātha says: Śrī Rādhikā is very happy with Viśākhā’s narma sakhya (pleasure friendship) and She has dedicated Her heart to her!”

Viśākhā is non-different from Śrīmatī Rādhā because She is of the same age.
Rādhikā cannot have such a funny, humorous relationship with anyone else as She has with Viśākhā. Even more, Viśākhā is Śrī Rādhikā’s life-airs manifest outside of Her!

In Ujjvala Nīlamaṇi Śrī Rādhikā says:

tvam asi mad asavo bahiś carantah –  “O sakhi! You are My life-air, moving outside of Me!”, and Viśākhā also worships Rādhikā’s moonlight-nails with innumerable wicks of her life-airs.

The offering of wicks during the ārati-ceremony serves the purpose of burning up all inauspiciousness for the deity, and Viśākhā wants to accomplish the same by worshipping Śrī Rādhikā’s moonlike nails with the wicks of Her life-airs.