hayley - first off I am so sorry for your losses. And you are absolutely not over reacting!! I don't think people think sometimes. While you certainly take the cake here are some things that have been said to me since my m/s.
"you are letting this define you, you need to move on." this was at just shy of 4 weeks post m/c
"do you think your being overweight has anything to do with losing your son."
"it happens you need to get over it."
and today my mom left me a message asking me if I had received christmas cards from my cousins and aren't all of their babies adorable and they look like angels. THANKS MOM

Big hugs to you. and if you need space from your mom than thats what you should do.