Hysteria & believing non occurred things

Problem is related to my Wife( 28 Years) She having issue losing control on her mind when too much angry . On that situation she said to extremes things ( like harassing others /close relatives with full anger and shouting ) which hurt others. After few days when she became normal she deeply apologies that should not happened. Last four years this has been noticed couple of times. I talked with her whenever such things occurred but it come back again. 2nd problem is that she imagine something which never happened . I noticed 3 example till now two is very serious . One , As per her my 2 year daughter went down fourth floor to 3rd floor vi stair by herself. But we noticed my daughter very afraid to go down single step via stair. It is impossible for her went down 18th steps in stair. two. she believe that transgender forcefully took her gold chain from her parent house without being notice by her parents. My in laws denied and told this is impossible. Please advise .