After seeing the entire bird, I think you have a Silver Laced Wyandotte bantam hen (SLWs do come as bantams). The legs are not slate colored like those of a Silver Sebright (as PoultryQueen101 pointed out), and the tail does not look like a Sebright tail. I think your initial heading SLW is correct, you just need to add the word "bantam."
I agree know that I've seen the whole chick. Looks to be a slwb. The tail if a seabright would be more pronounced and upright I believe.