Surratt House Servants

[Gene C]

In the book "Kennedy and Lincoln" by Dr. John Lattimer, the author says the following:

"He (Weichmann) had reported his suspicions of the subversive group to an associate, who had apparently scoffed at his worries. Certainly no action was taken at the time since the plotters had not yet done anything, but the seed was planted: it was known that Booth was involved in a group whose headquarters was at Mrs. Surratt's rooming house. Later, one of the servant girls working there also went to the authorities with her suspicions." (p. 106)

No footnotes in this book, so does anyone know who is the servant, when did she go to the authorities, and what did she say? Did she testify at the trial, and any idea how damaging was her statement regarding Mrs. Surratt?