Kaumari is considered as one of the Sapta Matrikas (7 forms of Divine Mother). She is also associated with the Kanya Kumari form of Devi.
The references to the Kaumari form of Devi are found in -
The Devi Mahatmya, found in the Markandeya Purana:
Kumārarūpā Kaumarī mayūravaravāhanā |
raktavastradharā tad vacchūlaśaktidharā mata ||
Kumārarūpadhāri ca Kumāra-jananī tathā |
Kumāraripuhantri ca Kaumārī tena sā smrtā ||
Taittirīya Aranyaka found in the Yajur Veda (here she is addressed as Durga):
Kātyāyanyā vidmahe Kanyākumārī dhīmahi, tan no Durgiḥ pracodayāt
Matsya Purāna (it describes her as the daughter of Lalitā and mentions Māyipuri as a place sacred to her):
Māyāpuryām Kumāri tu santāne Lalitā tathā
This wiki articles claims that the Kanya Kumari form is also mentioned in the Ramayana, Mahabharata and the Narayana Upanishad, without any references.
Question: Which other scriptures mention the Kaumari or Kanya Kumari form of the Devi?