I see we have a thread for her sister, but not for her or her brother.
Dominique is a name for either a boy or a girl, if memory serves, but most people seem to think she's female (myself included) Unless she was actually proved to be a girl, of course, but I'm not sure.
Anyway, I've got a couple questions about her:
How old do you think she was at the time of the Epilogue?
What would she look like? Would she be more Weasley-ish or look more like her mother?
What do you think she's like, personality-wise?
What house would she be in?
Do you think she'd get along well with her sister? Her brother? Her parents? How about the rest of her family, and the students/teachers at Hogwarts?
That's all for now... I'm interested to see what people think.