Three options suggested, visit Advocates Chamber r/w Courts wisely;
1. File case of S. 9 HMA in a family court. If he accepts, end of litigation, she resumes marital life. If he refuses the Judgment in this case leads to divorce.
2. If your sister not earning and her husband dis capable hand then along with S. 9 HMA file a case of S. 125 CrPC. She will get interim maintenance. In such Application she can mention verbal domestic violence incidences and her husband’s refusal to cohabit with her.
2.1 By the time these two suits in family court warms up read with failed re-conciliations which will be ordered in due course during either/both the suit matters it would be time to follow last option, i.e.
3. Start looking for a suitable boy for re-marriage of your sister.
A. You mentioned here that all civilities are over to resume cohabitation between them as reflecting from your narrations herein, hence civil divorce is orthodox way – out in such briefs.
B. Verbal (over tel.) abuses or acrimonious statements between husband-wife does not fall under S. 498a IPC. Hence filing S. 498a IPC is ruled out. Yet, one may try hand in filing Domestic Violence Act complaint case which is softer form of S. 498a IPC and still leads to complete break-up yet comes under quasi criminal proceedings. Hence civil divorce route by following para 1 / 2 are orthodox way – out in such briefs.