Our
sponsorship Assessment is done... Now how will her stay effect?It depends on if she is a PR or a canadian citizen.
PR's has to stay in Canada during the spousal sponsorship process, short trips 2-3 weeks is ok.
Canadian Citizens can stay outside but NDVO might ask for additional documents as proof that she will return to Canada when you get approved and explanation of how she is going to support you both (documents like bank balance in canada, family support letter, job offer in canada etc are proofs). This might increase the wait times but may not.
Good luck!