The Angel Island Lazaretto, in the San Fransisco bay, is where Sonoma shoves everyone it otherwise doesn't want to take care of. This primarily includes lepers and those with Exclusion Sickness, though it happens from time to time that a Godly soul or a pariah will choose to move there and live in charity to the colony.
The leper colony and its dock are all huddled around Ayala Cove on the North side of the island. Here, scraggly trees break the heat of the sun, and allow the colony to live in relative comfort. The rest of the island is dry and uninhabited.
Based on the island of the same name.
What a desperately sad place. I am glad there is welcome there for those that need it.
If it helps, it'll be one of the more peaceful parts of her life, ultimately. It's where she makes peace with her ailment, and finds a new purpose and drive. Despite the pains within its borders, the people there mostly look out for each other.