I was arrested yesterday afternoon for felony vandalism to my psycho stalker. Can anyone give me legal advice?

Your attorney will be the person with the real answers. Police make arrests on probable cause so about 51% odds a crime occurred. The district attorney is the one who makes decisions on actual charges. The burden of proof for them is much higher-- beyond a reasonable doubt. Sounds like there is plenty of reasonable doubt in the story you have shared. It may be the district attorney decides not to press charges at all. It doesn't sound like a very good case. Might be time to move.