I too am sorry for what you went through. As for the slide, practice the"push/pull" method. There are videos on youtube but basically (assuming you're right handed) push the gun forward with your right hand while at the same time pull the slide back with your left. With practice it becomes second nature.
As for the 2nd ? My answer is always the same, "because I believe & support the 2nd amendment. I'm a woman also and that answer usually shuts them up. If not,I consider it their issue not mine.
Best of luck to you!
"A woman who demands further gun control legislation is like a chicken who roots for Colonel Sanders."- Larry Elder