بسم الله الرحمن الرحيم
(Fatwa: 127/127/B=2/1439)
Iddah means passing of a specific period. However, according to Shariah, after passing that period iddah is complete though there is no intention of passing iddah from the woman. However, in such a case she shall be sinful for not following the conditions of iddah properly. She should do taubah and istighfar. If you have done your second nikah after passing three complete menstruating iddah after talaq then your nikah is correct and valid.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
