After you receive your Notice of Decision, you also get a lettter that says your kid should leave the country in .. days, ( I forgot the exact number of days) , if you are in that period of time, your kid can leave and then enter the country without a problem, but if that period ended , same as me, then your kid’s order of deportation doesn’t let her to come back to Canada till she get her PR or few years pass. So, The problem is your child will not be able to re enter to Canada.
2- you can contact USA embassy directly, but they told me they can issue a new passport but they can’t ask CBSA to let my kid re enter, because it’s not in embassy’s hand.
3- yes your kid is out of status.
I tried all the possible ways but I couldn’t find a solution. The best way is to stay and wait for PR, fortunately the processing time for PR is getting shorter each month .