too much depression results in brain tumour?

[margate]

My mother recently died bc of brain tumour ..she had malignancy in breast two years back and her one breast was removed ...before the death she got cysts at various places of her body and finally in the barin and than she died...bfore getting these cysts she was extremely worried bc of some family problems...#
now i m worried tht has she taken any thing so much personally tht she suffered from ths problem..is it true tht too much worries results in brain tumour?????????or it was her tht cancer in breast which reached to the brain?plz reply