Crazy MIL? This isn't really a vent..more of a whats your opinion..?

Ok. Lemme just start with I am 9mo. prego [babies coming next week via c-section] and my MIL is OBSESSED. Since she found out I was prego she has left hints about wanting to be 'mommy' again. She TOLD us she would be in the delivery room [yea right]. And called my son 'her baby' quite a few times etc. Has problems with personal [i.e. will hug and squeeze my tummy and DEMAND the baby move for her. And she gets upset cause the baby would never kick for her] but yesterday was a little bit much. She has been freaking out over the delivery [donno why...shes not the one who has to go though it and I'm ok with it] so she got sent to the hospital cause her blood pressure was through the roof. We went over to visit and when we walk in she seems drunk as hell. Come to find out they gave her some sort of relaxer... and Valium. So for 4HOURS she tells us she wants to steal our baby. That the baby is here to fill the void in her heart [she divorced and very bitter towards men]. That I stole her son. The the baby is HER baby.[She didn't just mention it- when my hubby said you mean Jess's baby- and she screamed NO! Its MY BABY. MINE!] No joke here people. She layed on me and started hugging my stomach and kissing all over it. [gross] AND then she made reference that SHE wanted to FEED him to! To 'bond' OH HELL NO. That is freaking nasty! And as far as feeding that's MY job. The woman has made it known MANY times shes is jealous and wants Nathan [baby]. But never so openly in front of me. She doesn't want me to know. But she tells my BIL who lives with her she was to steal Nathan but we would call the cops on her [hell yea - crazy woman..] And that's its not far and he should be her baby cause she doesn't have anyone. I can understand shes loves being a mo and wants someone to love. But isn't this a bit much. We already decided she never being left alone with him. And no one is allowed in to see the baby till after my recovery so me and hubby will already have him cause I'm kinda afraid once she picks him up she wont wanna give him back. I donno. This women drives me bloody mad and has since she found out I was pregnant. But I somehow manage... What would you all do/think of this? Anyone else with a crazy MIL?