Because this isn't the forum I would bring this kind of thread to, I'm not surprised at the reaction in the slightest.
Shouldn't matter what part of the forum it's in, doesn't mean people have the right to be doughnuts for the sake of it.
I know it's an open forum and all, but bit of common courtesy doesn't hurt.
Anyhoo, this sort of thing tears family apart, it's the incessant greed Vs fair and just which causes it. I don't believe people should roll over to those that are being greedy, but also it is an awful thing to turn your family into ultimately a transaction.
My parents have stated from the outset that regardless how much they've helped out is kids over the years (me and my youngest sibling have never asked or been given financial help, however my older brother has always been there with the begging bowl)
If my dad goes first then it goes to my mum, who's actually my step mother but she's been with us since I was 7 so it's basically mum, but there is a concern that her son (eldest brother who likes to use the begging bowl) will end up with a larger share if not all of it, she's always given into his pressure when it involves financial assistance or other things he needs assistance with, and has always been that way, coincidentally they've only ever had falling outs when she's refused to help him. Me and my younger brother are both self made (not millionaires or anything but we're doing well enough) and and never asked for anything other than assistance to do a bit of DIY for which we reciprocate the favours, we both earn good money and have our own houses.
We have recently had a number of family members pass away, grand parents from various sides of the family's and some have had large fall outs due to inheritance (my wife's side of the family) and this sparked an open discussion about it.
Me and my little bro both stated that if a family member tried taking more than stated in parents will now, or tries to coherce parents into signing more over, then we wouldn't bother fighting it out, we'd let it go and ultimately wouldn't talk to that family member any longer once the parents have passed, as for them to do this means they don't care much for the family unit. Out of respect to our parents we said we would always get on and talk to one another regardless of what goes on at least for as long as they are alive.
I don't have the same feeling if my mum went first and dad had sole responsibility, as I know my dad would not break his will and will not have favouritism.
The OP does now need to step into a protective role for his mother so she doesn't do anything silly, like she offered the OP (selling the house and giving him money etc). In what the op's told us is does appear that his mum is quite vulnerable in this regard, what his mum doesn't need now is to sign over her savings to his sister at some point.