Antique Edwardian Small Black Top Woman Child Repaired or Pattern Costume 1800s

For a small Woman or Child
We think this is late 1800s, but it could be vintage too- not sure
Measures (laying flat):
Shoulder to Shoulder: 13.5"
Chest: 18" (x 2 = 36" chest)
Top of shoulder to hem (length): 19"
Sleeve length: 23"
We are unsure of what the fabric is
Some of the collar is fraying and the hook is hanging loose on 1 side
We think this has been altered/upgraded since the 1800s, as some of it (probably the original parts) were hand sewn and some are machine sewn It looks like the lining may have been added later- there are some spots on it
We didn't find any holes on the top itself, but that doesn't mean we didn't miss some