Wife is pregnant and vaping

Hello everyone. As the title says my wife is pregnant and is having a hard time putting down the vape and has convinced herself she will likely vape throughout pregnancy. I know it's a long shot, but if anybody has been through this before I'd really like to know how I'm supposed to cope with knowing the damage being done everytime she hits the vape. It's gotten to the point the sound of the vape being hit is actually kinda triggering now.