Mother in law..

Would it be selfish to keep my daughter away from her gma bc she’s talking shit to me and telling her sons that she wants something bad to happen to me? Would it be selfish bc of personal feelings?

Backstory: When I had my daughter October 2023, my husband and I suspected his mom was on drugs, we didn’t let her around our daughter. She denied it but we just knew, especially my husband bc she did drugs and was abusive to him growing up so he knows her behavior. A few months in, she stopped and everything was fine. Fast forward to a year later, she ADMITTED to us that she was doing stuff around that time. So now like almost 2 weeks ago, she’s acting the SAME EXACT WAY the first time around. I’ve been with my husband for 4 1/2 years and she’s only ever acted this way doing drugs. Well I straight up ask her if she’s doing drugs and she just goes BALLISTIC and tells me off, Denying it. She’s calling me names and telling her other son (17) that she wants to beat my ass!!Talking MAD smack about me. She’s been texting my husband on bs to and also is telling him wishing bad shit to happen to me. My husband and I agreed (before she started talking shit) that until she takes a drug test, she’s not to be at our house. Not to be around our daughter. This woman has disrespected me soooo much since I got pregnant and this just topped the cake. I’ve lost all respect for this woman. IF she takes a drug test and is clean, would it be wrong to still keep my daughter away from her bc of this? This lady crossed a frickin line like fr. A part of me thinks it would be wrong bc it would be out of personal feelings but also like why the f you gonna talk to and about your sons wife and granddaughters mom like that? What, all bc I asked if she was on drugs? I, myself is completely done with this woman. I’m cool off it 🙅🏼‍♀️ what do you think?