When her mother is brutally murdered, a family woman must find out who her mother was, in order to uncover what happened; but when a cult from her mother’s secret past starts to infiltrate her life , she must Mary and her family must escape indoctrination or risk becoming victims themselves.

What is the backstory here? How far back was the "secret past?" How old was her mother when she left the cult? Did she have her daughter while in the cult? Does the daughter have memories from being in the cult?

I am asking because I don't see why the cult would kill the mother 30 years later or more, by the time she has become a grandmother. Why the wait?

The logline is very long as it is. I suggest:

"When her mother is brutally murdered, a religious single mum must find the killers, to save her own daughter from sacrifice by an ancient cult."

I obviously took some liberties with character traits and details, but we need to see some specifics, so swap them for whatever works for you.

I put "single mother" instead of "family woman," because it makes her position even worse, being all alone against the enemy. If you have a plan for her husband to help or impede her, ignore the suggestion.

>>>well i am working with the main reasons anybody ever sacrificed anyone. so that stuff gets better or stops being bad in the eyes of the cult

Ritualistic human sacrifice has never been practiced in Christianity. Nor Islam.? Nor Judaism.? So what kind of "off-brand" cult is it?? And why would she seek consolation in an "off-brand" demonic cult? that practices human sacrifices even if she doesn't know? she is in jeopardy of being sacrificed?

People get involved in cults because they are looking for hope, for spiritual consolation, for solutions to the vexing problems of life they don't see in standard brand religions.?? So what's is the doctrine or eschatology? in this cult that hooks her interest?

>>>well i am working with the main reasons anybody ever sacrificed anyone. so that stuff gets better or stops being bad in the eyes of the cult

Ritualistic human sacrifice has never been practiced in Christianity. Nor Islam.? Nor Judaism.? So what kind of "off-brand" cult is it?? And why would she seek consolation in an "off-brand" demonic cult? that practices human sacrifices even if she doesn't know? she is in jeopardy of being sacrificed?

People get involved in cults because they are looking for hope, for spiritual consolation, for solutions to the vexing problems of life they don't see in standard brand religions.?? So what's is the doctrine or eschatology? in this cult that hooks her interest?