it might help to get milk and stuff in the smallest container possible.

maybe microwave foods would be easier to prepare--no choppingm etc.

also a toilet device that has arm rest/grab bar like this
http://www.nextag.com/Rubbermaid--2700067/toilet-arm-rest/brand-html

also there are toilet paper dispensers that have a metal weight that holds down the roll so you can tear off what you need...

there are so many little things made more difficult...even blowing your nose! My father had a stroke and lived with paralysis for over 15 years. there are many helpful devices made to accommodate this..
devices that hold yourplate on teh table so you can scoop off food...

perhaps a liquid soap with a pump dispenser would make hand washing easier...or maybe wet wipes or diaper wipes...disposable things for clean up....

hopefully your mom's wrist will be as good as new soon...