Complex sentence: On the insistance of Eugene Lanceray, her brother, Serebriakova sent "At the Dressing-Table" to Saint-Petersburg, where it was exhibited at VII exhibition of Union of Russian artists, which moved from Moscow in the beginning of 1910.
Split into simpler sentences: On the insistance of Eugene Lanceray, her brother, Serebriakova sent "At the Dressing-Table" to Saint-Petersburg. It was exhibited at the 7-th exhibition of Union of Russian artists, which moved from Moscow in the beginning of 1910.