main aapko shapath deta hoon devkiji ki agar apne mujhe satya nahi bataya toh aap mera mrit mukh dekhengi (I swear that if you don't tell the truth you will see me dead).
This is what Shashtri jee told Devaki and in return she told the truth why Radhika was thrown out of PB but she ended her tale with:
Vishakha us ghar kee chhoti bahu hai jee, ham nahin chahte the ki uske upar koi lanchhan lage isliye Radhika ko lekar chupchap yahan wapas aa gaye ( Vishakha is CB of that house, we did not want her to be blamed so we came back here along with Radhika without saying anything).
Isn't she afraid that she inserted the not true part here and by doing that she is still not honouring her husband's words and pledge?