VP, we went over this already.
Your mother made a comment. Then you and she had a fight, and you asked her if she meant that you should get rid of your clothes. She said no.
Do you want to hear that your mother is a liar? Even if I said that must have been what she meant, would that make you get rid of your clothes?
It doesn't really matter whether or not your mother is sincere when she tells you that is not what she meant.
You are going to keep buying clothes and you are not going to get rid of any you currently own, right?
And your mother is elderly and she probably does think you have too many clothes, right? Okay, so it's a stalemate.
She's right; too much stuff CAN be a fire hazard, whether it's clothes or books or mattress pads makes no difference. If there's too much of it and it's flammable, then it's a fire hazard.
Instead of fretting over what your mother said and what it really means, why not focus your energies on finding a place of your own so that you won't have this problem any more?
Keep networking and applying for jobs. Once you get one, you can afford to move. And once you move, your clothes will go with you and your mother won't have to worry about living in a "firetrap."
Until then, remember: If you ask your mother for an answer and get an answer you can live with, don't keep picking at her until she gets mad and gives you a different answer. Accept her answers at face value and let it go.