To me it is odd as in my country (NL) most women don t even take their husband' s name to begin with and when they do they change back immediately when separated or divorced. But perhaps it is still a practise in some countries and in some circles to continue using your ex-husband's name especially when it's a posh name but it comes across as rather old-fashioned. If you can change your name upon marriage for all your friends, family and business contacts you can change it back when divorced. It requires some administrative work but it can be done in a day. This is 2026 after all...