तपस्विनी engaged in religious austerities (for consecration), वैदेही चापि Sita also, तत्सर्वम् all that, न शुश्राव did not hear, तस्याः her, हृदि in heart, तत् that, अभिषेचनम् एव only consecration (was reflecting).

Sita, her mind preoccupied with thoughts about consecration, was engaged in religious austerities and hence could not hear of all this (development).