Hi Karen
You said you liked blunt talking.. I know that you love your mum to bits but you have a husband and son who need you. Taking a guess, your son has up to 80 years ahead of him, you and your husband have, I estimate have another 40 plus years together. You cannot afford to sacrifice all that just to do what your heart decrees, which is to look after your mum in her last few years at the expense of all else.
I have to agree with Amy, what is best for you, your son, your husband and your mother are one and the same thing - but it will take a lot of courage and willpower to do the right thing.
My thoughts are with you at this difficult time.
Love
Dick
"Your darkest hour is only sixty minutes long."