Concerns about sister

[Lily715]

Hi all. New to this so bear with me!
Deeply concerned about my younger sister. First baby almost a year ago. She is paranoid, angry, makes all sorts of abnormal, untrue accusations against family members. Has strange delusions about what others think and do. Flies off the handle at the slightest thing.
I don't know what's going on at all.
Any suggestions, thoughts, help would be much appreciated.

Is all of this behaviour started since she had your DN?

My sister has always been a very highly strung person with clear ideas about what is right etc but since she got pregnant she has been like this

I dont know what to do anymore. We have now blocked each other due to arguments and I am not allowed to see her child.

If you've blocked one another, I'm not sure there is much you can do.

Do you have any other family? Are they concerned about her behaviour?

I don't think we will speak for a while now, I'm more looking for advice about what has happened to her. Yes, others in the family are concerned.

Is her behaviour dangerous or just rude and odd?

I go a bit like this when pregnant. I get aggressive and see threats everywhere, and withdraw into myself as I think the world is unsafe. It eases after the birth but is still somewhat there for a few months. I think in my case it's an almost primitive instinct or at least that's what it feels like.

It lasting a year is a bit odd though.

She is pushing away everyone. She thinks things about people that are absolutely not true. It is tearing the family apart.

Perhaps she has the type of post natal depression that includes psychosis.

Either that or she genuinely knows things about family members (or has has experiences with them) that you haven't, and the pregnancy/having a child has brought it all to the surface.

(it's common for abuse to come out when someone has a child).