New Chicky

Hey guys!

Today my roommate brought home a Belgian hen he got from a friend as her chickens kept attacking it. We currently have 5 silkies, 2 roos 3 hens. I have never heard of this breed and would love some information, especially how they get along with other breeds. I am already in love with her and want her to fit in with my current flock!
And if someone could help me with an age estimate that would be great!