In Russia she was blamed for not converting to the orthodox faith.After the Russian revolution when most of her children were killed in the most horrendous (much worse than the emporor and his family) way she was invited by Queen Victoria of Sweden to stay for some years in Stockholm. She then returned to Altenburg where she is buried. Her husband revealed in his diary recently opened that he was gay although they had nine children together.
What was the horrible means by which her children were killed by the Communists?
Poor Mavra probably suffered more than any other surviving Romanov. Her son, Oleg, killed in the war, along with her son-in-law, Prince Bagration. Her husband, to whom she was devoted, dying fairly young, partially due to grief--though this spared him likely execution later on. Three of her sons killed, along with Grand Duchess Elizabeth, in the Urals--a slow death though I don't know if it was
much worse than the Imperial family. Her brother-in-law, Dmitri, executed along with other Grand Dukes. A second son-in-law (and aide to GD Dmitri) dying of illness soon after his marriage--done mostly to help protect Mavra's daughter, the widowed Tatiana. Out of one of the largest families in the Romanov clan, 9 children, she was left by 1919 with 4 surviving children and only descendants from her son Ivan and daughter Tatiana--and there are few of them at that and none in the male line anymore. And all the tragedies came after losing a child in infancy.