help :/

Im really worried about my mom.. A couple of days ago she called me into her room crying and she was telling me she doesn't want to be here anymore, that she wants to die.... She told me that she needed help.  Shes became very depressed after my grandma's passing. Its been about a year and a half so it's still very fresh. I don't know how to help her besides telling her " it's going to get better" i know how annoying that statement is. I was just thinking about making a doctor's appointment for her, am I able to do that? She stopped taking her depression medication a long time ago. Im afraid shes going to do something to herself... The night she called me to talk to her she said she took 5 sleeping pills cause she "just wants to sleep forever" I need advice :(