Motherzilla of the bride.

Remind her it is your day, about you and your future spouse...and not about her. Flat. Out . No cutting corners or niceties.
Tell her if she can either assist in YOUR vision of the day, or she can be the same as all other guests and not be included in any details. Easy. (Then again, I'm a very blunt person when I need to be...)

Is your mom helping with the cost of the wedding? Sometimes that makes them feel as tho they have the power to get what they want since they are paying for it. If she is, then you need to ask yourself if you chat with her and she gets mad and withdraws paying, can you offered it without her. Once you know what you can/can not do, think of having a conversation with her. I agree that it's your & FH day and she needs to understand this. Tell her there are things you will work with her but she needs to give up some of her crazier ideas. Good luck with it all.

I think you should just tell her how you feel in a calm and respectful manner . Tell her that you appreciate her input , but that you dreamed about planning the wedding with your husband. Or as a last way out say that you want to surprise her with the wedding and you do not want her stressed .

No pay, no say. But if she’s paying she has a lot of say. Hopefully she is not and you can nip this in the bud. My mom has complained and been nasty this entire engagement and I always remind her she’s not paying, so in one ear and out another.

Is she paying for this wedding? If not, stop talking to her about it. And tell her no, you are having a traditional procession. That’s it.

I would just say you want to be in charge of planning YOUR wedding, that's not mean. Then involve her in things that don't matter to you as much. But the walking down the aisle thing is a little crazy, I'd just tell her you are doing it how tradition expects.

I feel your pain. My mother is trying to control everything for my wedding and regularly throwing tantrums when I tell her what I plan to do. It had gotten to the point that I am flat out refusing to include her in anything, I am no longer sharing any details with her and when I go dress shopping she will not be invited.

It totally sucks to have to cut her out of everything but I will not stand for the negativity and attempts to control my life any more.

OP, if your mom isn't helping financially it may be in your best interest to not share the details with her