As a result of the February Revolution in 1917 she was freed and returned to political action within the Socialist Revolutionary Party firstly in Chita, and then Moscow, where she was elected again to the regional party committee. She participated during the October political uprising as a member of the Petrograd Military Revolutionary Committee and then joined the Left Socialist-Revolutionaries rising through the ranks of the new party. She was a member of the Central Committee of the Left SRs, of the praesidium of the Moscow Soviet, and the Central Executive Committee of the soviets. As reward for her efforts in the party, she was designated to be one of the seven members of the Soviet Delegation for the German-Soviet peace talks for World War I in Brest-Litovsk. Bitsenko was the only woman present during the negotiations; her appointment was a political manoeuvre by the Bolsheviks to give representation to the rival Left Socialist-Revolutionaries. The talks concluded with the signing of the Treaty of Brest-Litovsk, a hugely popular peace treaty which ended the fighting on the Eastern Front.