Both children seem very loyal to their adoptive mother.

两个孩子似乎都对他们的养母忠心耿耿。

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She is under an obligation to her adoptive mother.

她有义务赡养她的养母。

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Both boys still pine for their loving adoptive mother, recently deceased.

最近，两个孩子仍为他们敬爱的养母的不幸去世而悲伤不矣。

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Pavel Astakhov sparked controversy last month, alleging he had been murdered by his adoptive mother.

BBC: Max Shatto Russia-US adoption death ruled an accident

When he died, Russia's children's commissioner Pavel Astakhov alleged he had been murdered by his adoptive mother.

BBC: Max Shatto: Texas prosecutor declines charges in death

Mr Astakhov had initially broken news of the death on Twitter, saying the child's adoptive mother had killed him.

BBC: Max Shatto Russia-US adoption death ruled an accident