If dog's gender found at Mine in 1919 was female, and if it was Jemmy, then it is more than obvious that Jemmy was female.
BUT, Anastasia, in letter(s) reffers to Jemmy as 'MOI' on April 28th 1918, not 'MOYA', and 'Moi's is said for expressing male gender, unlike in English 'My' may reffer to both genders. So it is logical that it was male. Dude, why those contradictions must happen...?
A.A. Tegleva:
I saw a dog that is extracted from the mine. This positive, Jimmy, a little dog of Anastasia's. It was her dog, which almost could not walk because she could not, for example, it is to climb the ladder, even the stairs inside the house. Anastasia always held her on her hands.
But simply Tegelva is repeating examination done by the Whites, who said that the dog was female.