My moms going through menopause, and its terrible!?

You just have to remember that she is going through this right now and eventually it will be over. When my Ma went through that she kept the house at like 50 degree F all year which was terrible. Just brush off anything she might say that was snippy and do things to help her out if she is having a bad day. Let her know you understand she can't control everything that is happening to her emotions/body right now.