apayayat stanam prita
mohita mayaya visnor
yaya srstih pravartate
Lovingly she let her sons drink from her breast, which became wet with milk just by their touch. She was entranced by the same illusory energy of Lord Visnu that initiates the creation of the universe.
In the opinion of Srila Jiva Gosvami, the word srsti can here also refer to the creative process by which Lord Visnu’s Yoga-maya arranges the settings and situations of His pastimes. There is indeed no question of Mother Devaki being affected by the material aspect of Maya.