Dally's unknown sister

I never had a family...except for him. But, of course, he left me, leaving not a trace behind, just disappearing into the night. I haven't seen him since...until now. Now were all like one huge family, the gang , I mean. Only I've got a problem, I've developed feeling for some of the gang, and I think they have for me to. If I tell them will it ruin their friendship? Just when I thought nothing could get more complicated in this cluttered life of mine....