The OP has said the spelling of her name is almost literally in front of the MiL (in WhatsApp, emails etc).
That's absolutely nothing like calling somebody fat. Be careful you don't put your back out with that reach, FFS.
Yes, I agree - no memory is required, it's literally typing/writing what you are reading in front of you.
I don't know if it's the case at all here, but a 'surprising' number of British people would have no problem at all with a name like Jonathan or Catherine but 'suddenly' develop a complete inability to 'remember' how to spell much simpler names like Magda or Femi - I wonder why that may be....
There's no excuse for being fat either but memory problems are developmental so you are born with it, shoving cake in your mouth is self inflicted and IS your fault
That's just nasty. People can be overweight for many reasons, not all of them fully/at all self-inflicted. Katie Price's son Harvey, just for one, happens to be a very large man - do you hold him personally responsible for his size, in spite of the many health challenges that he and his mum have worked so hard to overcome?
How would you like it if somebody make a similar outrageous assumption and told you that you should stop smoking so much weed, as that would supposedly 'improve' your memory problems?