Aglaya, I think you're right after all. Judging by their location in the Beinecke albums, these were probably taken either in very late 1914 or early 1915. Vyrubova's albums are a bit jumbled, but these photos are on the same page as the photo of OTM on the day of Konstantine Konstantinovich's funeral (1915). The previous two pages are nursing shots from the lazaret (1914), and pictures of Vyrubova recovering from her rail accident (January 1915).