Talk to friends, write letters, call legislators, make your voice heard. Don't just sit back and think that someone else will take away your fear - only you can do that. If you are not as proficient with firearms as you would like to be, find a woman-friendly range and get more instruction. Do research and read the instruction manual that comes with a new firearm. Find groups with which you can get involved.
Most ranges have leagues or other groups that meet regularly.
If your local range doesn't have one, contact the TSRA office and the Women's Issues Committee will help you.