>>1 I think that the best thing to do is make sure that you know what's important (or not important) and be open to each other. Little things shouldn't matter as much so don't make such a big deal out of them. Make sure that you and her clarify things so that there's no confusion or misunderstandings. I hope that helps. Let use know what happens.
Just because of the title I have to include this (from home improvements).
Jill: What causes sibling rivalry.
Tim: Having more than one kid XD