Hi Fnord847
Dealing with a severely depressed parent can be very difficult. Since when do you believe has she been struggling with depression? How was her behavior when you were growing up?
It's very unfortunate that your mother doesn't acknowledge she has a problem and doesn't seek help. You mention how her behavior has gotten worse these last few months. Did anything happen in particular preceding this change in her behavior? Is this the first time she's gotten so physically and verbally abusive or have there been periods before in which her behavior deteriorated like this?
It isn't easy hearing a loved one express suicidal thoughts. We have a workshop here that you might find helpful:
TOOLS: Dealing with threats of Suicide and Suicide AttemptsHow do your sister and grandmother view your mother's behavior?
Take care and welcome to bpdfamily