You don't have to tell anyone anything that won't improve your state if being. I told no one, other than the bf I was with who supported me all the way, that I had an abortion which greatly minimized negativity or interference.

Is she paying for the procedure thus feels some expectation to be involved? The legality to access of an abortion is rooted in the right to privacy. But you negated that by engaging those you knew would not provide the privacy you need.

Side note: it's unfortunate states believe imposing a burial will further dissuade women from choosing the procedure and what's right for them. This is what your mother is doing, not to mention guilting you for exercising your legal right.

Stop talking to them. Have the procedure done. Move on. If you're an adult and am making an adult choice, you have to act like an adult. Your body - your rules.