First, if it is domestic violence case, magistrate court is the trial court and sessions court is the appellate court under section 29 of the Act. It is not interlocutary order and hence, under Section 397 Cr.P.C. revision lies in the High Court. Further, under Article 227 of the Constitution of India, even writ also lies.
Whether husband filed revision or writ, we do not know. Whether he filed or he proposed to file, also, we do not know. In such circumstances, it is very difficult to give appropriate answer to your querry.
If he has already filed writ / revision, find out the latest position and next date of hearing from A.P. High Court web site. In the evening a day earlier, visit the web site and see the cause list and you can find out in which court the matter is listed.
If he has not filed any writ / revision, then you can file caveat petition and on the first date of hearing itself, the court will hear you also.
Without full details in your querry, in future, I will not respond.