Only the Principal Applicant (you) is eligible for a BOWP.
But, she may be eligible for a spouse's open work permit, based on your BOWP.
She has to apply for her own open work permit in her country.
She would need a copy of your old BOWP and the application for the new one (or, yes, it would be easier to wait until you got the new BOWP, but not strictly necessary).
She would also need proof of your employment (letter of employment, recent paystub) in a skilled occupation (NOC O, A, or B).
Alternatively, she could apply for a visitor's visa, and then once she is here, she can apply for the SOWP from inside Canada.