OK. I get it. If I were you, I would ask her to sit down and chat. I would "leave aside" - just for the time being - all the outrageous things she said to you and would tell her that this is NOT the moment to argue, that this is serious, and that YOU NEED HER. You can tell her that NOW there's a human being in danger and it's HER daughter. Tell her you'll have plenty of time to settle everythimg after you get over this. It's nothing but the truth. Sometimes pride makes discussions escalate. There's a tactic used in Systemic Psichology called 'one down' and is used to de-escalate a conflict. It's not losing face or giving in, it's appealing to REASON instead of feelings here. The enemy is the illness, not either of you!