if your wife decides to defend any divorce action bought against her, then the next stage is an Options Hearing. This is intended to give parties a chance to meet before the sheriff in order to ascertain if agreement can be reached without proceeding to a full proof (see below) or, if this is not possible, to focus the precise disagreement between parties.
The Proof If the matters at issue are not resolved the case proceeds to a 'proof.' A proof is a full court hearing where evidence is given by witnesses in proceedings open court. It can be reported by the media, subject to certain restrictions aimed at protecting 'public morals' and children.
The court may also refer the dispute to a mediator accredited to a specified family mediation organisation at any stage in the proceedings
The problem is what action can you bring against her? An internet affair isn't adultery and there is a strong burden of proof required to cite unreasonable behaviour. If there isn't sufficient evidence you may need to wait one year and divorce with consent or two years to divorce without consent.
Separation won't necessarily take any longer if there are finances and arrangements relating to children to sort out. Citing separation may save a significant amount in legal fees, especially if there are no outstanding financial issues or matters relating to children, because you can use the simplified procedure without a solicitor.