Sien and her mother, Maria Wilhelmina Hoornik-Pellers (1829–1910), lived at Noordstraat 16 in March and/or April. Because Sien, her daughter and the baby were to move in with Vincent on Schenkweg after the birth, her mother was able to move to a smaller house. That house was at Slijkeinde 31, in the working-class neighbourhood of Kortenbos.
Vincent wrote on 23 May 1882 that Sien and her mother had moved and that he hoped to make a drawing of their new garden. He ultimately made two. On 2 July 1882, Vincent wrote to Theo from Sien’s mother's house:
“I’m sitting writing to you next to Sien’s mother at a window looking out on a sort of courtyard. I’ve drawn it twice, once large and once smaller.”
These are the drawings entitled Sien’s Mother's House.