Does my sister have msbp? neice is just 18wks old

My mum suspects that my sister has msbp, now that she has raised the concern to me I realise she may be right & I'm so worried, but I don't have a clue what to do. The medical profession have not raised any concerns & we have no evidence whatsoever, except my sister's past & her personality. If I raise any formal concerns, & I'm wrong, I would feel awful & my sister would quite rightly never forgive me. If I do nothing & my neice is being harmed, I'd never forgive myself.
My sister now has 4 children. She abandoned the 1st in appalling circumstances, the child nearly died & it was only my mums suspicions that led to the child being rescued. However we all believed it was post natal depression & unlikely to recur. Social services fought hard to have the child adopted & we fought harder 2 keep the child in our family. Eventually we won.
My sister's second child was placed in immediate care from birth. Again we fought for the child, & following a hasty marriage to the child's father, who had to accept responsibility for the child's welfare, they were reunited. However we all noted that my sister barely bothered with the child, and her husband did 99.9% of the care. She then had another child, who social services were not interested in. Again the father did almost all of the care. My sister showed zero interest in any of her children.
As a result we were all dumbfounded when she told us she felt broody, and dismayed when we found out she was pregnant again. She had joked about having 2 have another child in case she was forced 2 get a job when her eldest turned 7, & to be honest we all suspected she was having the baby purely to claim more benefits. She had nothing to do with her other children after all.
However we were particularly shocked that she bullied the medical profession into giving her an elective caesarian 3 weeks prematurely SOLELY so that she would not lose out on the benefit changes that came into force in April regarding the sure start maternity grant. This is not speculation on my part, she was v open about it & even boasted about how she bullied the drs, telling them she feared she would get one & hurt the baby if they didn't do the caesarian early. Btw this is not the 1st time she has used this argument 2 bully drs & social workers.
My neice suffered severe vomiting as soon as she was brought home & failed 2 thrive. Repeated medical examinations failed to find a cause & inconsistent results were noted following several blood tests. 6 weeks at a specialist children's hospital have failed 2 find any cause. However this can sometimes happen. My niece now has a feeding pump via her stomach. My sister has become a flying parent who can barely leave her babies side & gets incensed if anyone is the least bit inattentive towards her baby. She has already stated she will claim dla once the baby comes home - but is insisting the baby remains in hospital until the council replaster the walls in her council house.
I would appreciate your responses. Am I being unfair?

I'm sorry my spellchecker acted up a bit in my last post. I meant to say that my sister threatened medical staff with further episodes of pnd (post natal depression), not 'one' (?), also I didn't mean to say she had become a 'flying' (?!) parent, but that she had become a suddenly doting one. Apologies 4 any confusions @

I moved your post to the MBP forum. I am not sure if she has MSBP or not but it certainly sounds like she is using this child to get secondary gain. I think that unfortunately you probably need to report her to social services again for the worries you have about the chil's welfare, and possibly also report to the DWP for taking the mick with benefits. The unexplained illness is a cause for soncern but it is difficult to know if that is a result of MSBP or whether it is something like failure to thrive because the baby was prem. Anyhow I think that this needs reporting. You have concerns and the child's welfare is paramount.

Cracked

Thank u so much 4 yr response. I'm with my mum now, we are going 2 raise our concerns with social services and we very sincerely hope 2 b proved wrong. We will let u know how things work out. Thank u again x

You are welcome - let me know how it goes.

Cracked

Please, please write all of this down, along with dates and who witnessed the events, and give it to social services. It sounds like you've already been putting things together to do this, but please don't chicken out. Those children need you. They are helpless and vulnerable to abuse. Only another adult can speak up for them.

Please let us know how it goes. In the meantime, I'll be keeping you & the children in my thoughts.