Sister in law is angry that I "gave her kids vodka"

Last night my sister in law and her two kids came over for dinner while her husband has been away on business. I served penne a la vodka, she was raving about it all night and finally asked what was in it, when I told her vodka she FLIPPED. Saying she couldn't believe I would give alcohol to her toddlers. I tried to calm her down by telling her I cook with alcohol every once in awhile and my kids are fine, explaining that there is very little alcohol in it to begin with and once its cooked down the alcohol content is almost completely gone but she wasn't having any of it. She left in a hurry saying she needed to go buy gripe water so she could try to get her kids to "throw up the alcohol before its absorbed". My kids were stressed and crying not understanding why their aunt was yelling and acting crazy.Later on she texted me a very long message about how upset she was and how when her husband gets back they'll be having a talk about calling CPS on me for "getting my kids drunk". My husband just laughed and said his sister is known for being over dramatic but I'm shaken up about it, I've never seen her scream at someone like that before and I'm worried she will call CPS, although I'm not sure they can really do anything.I've tried to apologize, I grew up in a family of chefs, cooking with alcohol is just a normal thing to me it didn't even occur to me that someone would have a problem with it. Is she overreacting? Am I in the wrong? I don't want to do via /r/Parenting http://ift.tt/2lEcgbT