How can I help my wife get over her fear ?

My wife is scared of bugs she really hates katydids. Every time she sees one she freaks out. She hates being outside this time of year it makes her nervous. She saw two yesterday and one today. She does not want them in the house. Her parents have a camp ground by the river we’re going this weekend she knows there’s gonna be more there than here at home. She wishes they go away for 17 years like cicadas so she can be outside at night. Evening and night time are her two favorite times of the day to be out. We can’t go outside at night in the winter it’ll be too cold. She wishes she can be because that’s when all the bugs are gone. But she can’t be out in the cold because of her asthma especially at night. We were outside the other night one smacked into her she screamed like she was being attacked. If we go out at night she wants me to check all over her to make sure she doesn’t have one. She said they scare her because they look like a walking leaf she said she use to be terrified of leaves when she was little. Also she hates it when they fly at you that about gives her a heart attack. Last year before we were married she was still living with her parents she had one in her bedroom it freaked her out she had to go wake up her mom to get it out even though it was almost midnight she didn’t care she wasn’t gonna share a room with a katydid. I’ve tried to help her but she wouldn’t go anywhere near them or want nothing to do with them. Even looking at pictures creep her out. I hate bugs too but I’m not scared of them like her. She doesn’t go outside at night in the late summer or fall if she has to. How can I help her get over this fear ?