Would an intervention for my mom be a good, or bad idea?

I live with my mom. She's an alcholic. She drinks everyday and once in a while she gets ahitfaced. She lays in her bed crying, and she's just not fun to be around. Me, my mom and sister went garage selling at 9:30 am and she was already buzzed, and shit faced tonight. She called my aunt to talk, then my aunt called me and said she's going to get my sister and brother together and we are gonna do an intervention tomorrow. Every one's just gonna show up and talk to her. I'm really nervous and I'm afraid we are doing the wrong thing.

Would an intervention for my mom be a good, or bad idea?
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