Dude Put My Sister In A Coma.

My sister has been dating this guy that I haven’t liked for a while now. He and my brother have gotten into physical altercations because he’s such a POS. This guy does a lot of illegal shit and my sister got into the same stuff. Around 3 weeks ago, I got a call from the hospital asking me for permission to do all these tests on my sister. I don’t talk to her much anymore so I had no idea any of this was going on. I go to the hospital, and I’m told she died while being around this guy. And the doctors told me his story doesn’t make much sense. He claims that my sister just got out of bed and then collapsed to the floor. And that he tried to give her CPR, but the doctors said he did about as good a job as a child would, or he didn’t do CPR at all. The doctor goes on to say that with his size and weight, there is no way someone that big can give someone CPR as a child would. But she lost oxygen to her brain for more than 4 mins, meaning she was dead until the emts got there. She is currently in a coma; as of right now, if she is able to recover from this, she will never be the same. And will have to live in a facility specialized for people who have been through similar situations. So her life is ruined, and I’m trying really hard not to ruin mine as well by reacting.

My question is, can he be charged for lying? If so, what would the charge be? And do you think that someone 6’2 and 230 pounds could give a 5’1 and 100 pound female CPR and there be no signs of it? Maybe he’s not lying, it just seems sketchy to me.