Oh, this situation sounds so familiar to me! My dd got married 2 years ago, and my mum attempted to take over at every opportunity!
The main difference was, she didn't contribute any money. That didn't stop her applying every sort of pressure to me, to try to get a particular cousin chosen as bridesmaid, to invite certain people, and not others. She disapproved of the church, the reception, and pretty much everything.
I chose to keep most of this from my daughter, and I think that was the right decision, but I did get very stressed as a result. I tried to talk about the wedding as little as possible with my mum, but she made that very hard!
I said nothing to dd about the bridesmaid issue, and she chose friends as bridesmaids. We invited the people important to dd and her fiancé, making one concession to asking a friend of dgm in the hope that would give her someone to be with at the reception. That partially worked, so I think it was worth it.
Afterwards, dm told me all the things we had done 'wrong' - the bride's dress, my dress, the food, the drink, the venue, the guests, the vicar.....everything. But by then it was over and dd got the wedding she wanted.
I think part of my job as MOB was to absorb some of the crap and stop it spoiling the day for dd. But it was hard work and I'm glad I never have to do it again!
I think you have to pick and choose which battles to have - maybe give in on a couple of things but stick to your guns on important stuff. And yes, don't let your dd know all that is going on.