Justice Codrington's opinion repeatedly notes that the mother in this dependency case has "bi-polar" disorder. She uses the dashed version of this word eight times in the opinion, but twice uses the term "bipolar" without the dash.
I'd drop the dashes and just go with the term "bipolar." Which is what pretty much everyone else does as well.
P.S. - Judge Codrington subsequently edited her opinion, but with respect to substance, not form.