One last thing...I've come to the conclusion that http://fallout.wikia.com/wiki/Bittercup (the F3 character, I feel that we have to qualify this now) is the long lost daughter of http://fallout.wikia.com/wiki/Janice_Kaplinski
Or, if I've misjudged their respective ages, sisters.
Discuss.
Perhaps, but doubtful.
Janice said to have come to Rivet City and be under the wing of Doctor Li since it was the only option she had. She herself claims to know jack-[censored] about science, so we can assume she's not from a very good background, like Bittercup.
Bittercup however grew up in Little Lamplight, never claims to have any relatives what-so-ever, which she would know of, or atleast the other people there would know it. Janice said she was roaming the Wastes when she got to Rivet City, didn't say she came out of LL. And said she joined in with Li 7 years ago, if Im not mistaken.
Aside from appearance, there's nothing that could qualify them as relatives. Bittercup is a wannabe Goth, and Janice Kaplinski is a Polish/Jewish Lab-Assistant. Not much to compare..