Namaste Patrick,

not sure if you're still around after such a long time. This forum seems to be 'hidden by obscurity'. Wonder why no one replied to you that all hinduism-related talks are in Hinduism and Discuss Hinduism forums:

community.beliefnet.com/go/forum/view/34...
community.beliefnet.com/go/forum/view/34...

Vaishnavas, at least Gaudiya Vaishnavas, consider Radha the origin of Durga. Therefore one doesn't have to pray to Durga separately. And she is in charge of fulfilling material desires which Vaishnavas try to get rid of.

The main mantra related to Radha is Hare Krishna mahamantra, which addresses Radha and Krishna. It has no English translation, just several commentaries explaining its meaning. E.g.:

www.veda.harekrsna.cz/encyclopedia/sastr...

Hope this helps. Hare Krsna
Your servant, bh. Jan

www.vrindavan-dham.com
www.veda.harekrsna.cz

dvaitaM bandhAya mokSAt prAk prApte bodhe manISayA
bhaktyarthaM kalpitam dvaitaM advaitAd api sundaram

"Duality is bondage before moksa and wisdom after realization. The duality accepted for the purpose of bhakti is sweeter than even non-duality." (from mangalacarana to Advaitasiddhi sara sangraha by Madhusudana Sarasvati, former advaitin)