Brain mets... Looking for answers!

[Whitney2008]

My mother was diagnosed with breast cancer and they removed the lump, she was in remission for a year. Then after more more cancer they did a double mascetomy and removed the lymp nodes from under her arm. One year ago they found that her cancer spread to her lungs, liver and brain. She had serveral small spots and one 30mm tumor on her brain. Eight months ago she had WBR fifteen days straight and recieved good news that the small spot were gone and the big tumor's size had reduced. Then her neurologist avdised her to take care of her lungs and liver and then they would continue on her brain since it was under control.

Two months ago she received her PET scan results and her lungs and liver was clear. Then a new MRI revealed so many new brain mets that they could not count them and the large brain met was back up to 30 mm. She has now taken 2 months of Temodar b/c her doctor said she could not have WBR again since she had it 6 months earlier.

Can someone have WBR more than once?
And what is the life expectancy for a person with this many brain mets?

I have read everything online and I really want the truth....

Thank you in advance!