As per new government guidelines the Covishield and Covaccaine is safe during pregnancy and can be taken. Although Morderna vaccine is safest in pregnancy but due to its unavailability, Covishield or Covaccaine can also be given, as both of these are made from killed virus and will also provide immunity to the developing foetus

She can take vaccine during pregnancy

you can take vaccine anytime during pregnancy as per recent government guidelines

You can take vaccine anytime after delivery. Covaxin is preferrable but if not available, then can go for covishield.