It is feasible! It may be that she was always going to have the legal part of the wedding separate to the big ceremony/party as that is not unusual. That would have still been possible during lockdown and they may have wanted to be legally married before the baby arrived. They could have got those hideous rings as interim wedding bands as a little inside secret between them both. Didn’t they also stay at their venue around the time they were meant to be married? Would be a nice way to celebrate being legally married!I think she’s legally married