Is it obligatory to maintain ties of kinship with a maternal aunt who practiced sorcery that caused the sisters not to marry and one of them to fall ill, and does the obligation to maintain ties continue when women are uncovered in her house?

The kin whose ties must be maintained are those relatives with whom you have an unmarriageable kinship by blood, meaning marriage between you is forbidden. This includes fathers and mothers, sons and daughters, brothers and sisters and their children, and paternal uncles and aunts, and maternal uncles and aunts. Your maternal aunt is among those whose ties must be maintained. Maintaining ties involves showing kindness to her, according to the circumstances of both the one maintaining ties and the one to whom ties are maintained, such as greeting, visiting, and giving gifts. The obligation to maintain ties with your aunt is not waived by the claim that she has bewitched you. Rather, you must maintain ties with her through phone calls or visits, while lowering your gaze from what is forbidden, and it is necessary to advise your aunt's daughters to observe hijab. It is not permissible to accuse your aunt of witchcraft without proof, and boycotting her for this reason is not permissible. Delayed marriage and illness are divine decree and destiny and are not necessarily caused by witchcraft, and witchcraft does not avert destiny. If you are certain that she is harming you with witchcraft, then it is permissible to avoid closeness to her if that is the only way to avoid harm.