Hadith.2947 - Ali ibn Ri'ab narrated from Burayd al-‘Ijli, from Abu Ja'far عليه السلام:
"He (a person who invalidates their Umrah) must go out to one of the Miqats, enter Ihram from there, and perform a new Umrah."
The Tawaf of Women (Tawaf al-Nisa') is only obligatory for those performing Hajj or an independent Umrah (Umrah Mufradah). For the Mu'tamir (one performing Umrah), the Talbiyah should be discontinued upon entering the sacred precinct (Haram).