MOTHER DEPRESSION PRblm FROM LAST 11 YRS

My mother is suffering from depression from last 11 yrs .she doesn't take medicines . Her condition is going critical day by day . She doesn't like go anywhere . She is not understanding anyone even not us . She tries to commit suicide .we are trying to take her hospital but she is not agree to go. We are too worry about her . She herself doesn't know what she's talking about . She used to abused . As the weather changes her condition comes critical and for 2-3 month it stays after that all okay .. but from this year her condition is too critical .. she thinks everyone is talking about her . Dont know she always says about net ..that someone did this to her .. but nothing like that .. she's not in her stage .. she's worse day by day ..not taking food properly .. we did try to gave her medicines .. but not .... I'm also going in depression to see her behaviour like that .. I used to harm myself when she abused .I know she's not in her stage but she's not understanding us ...