Obviously my FI needs to be the one to talk to her but...
FMIL has basically been inserting herself into everything wedding related since day one. Don't get me wrong, she's a wonderful woman and I appreciate her help, but it's getting to the point where she's trying to take on more than she can chew. And then has made reference to what are my parents are doing to help (they, from the beginning said, tell us what to do and we'll do it). She doesn't need to be helping with everything, and I do go to her for some help on stuff I know she's good at, but I think she needs to step back a bit because she's trying to take on too much- there's a lot to get done but she can't do it all, nor do I expect that of her in any way shape or form.
She also has a bunch of friends of hers all wanting to help set up stuff as well, which is great, but ... you know the saying, too many cooks in the kitchen. I only need 2 or 3 people to help me with setting up the reception venue! Anyways, what do we (by me I mean FI) say to her without hurting her feelings? She'll take it way too personally and she's super sensitive.
Re: More FMIL woes...
Also, I'd recommend not asking her to do anything. I'm betting no matter what, she's not going to do things to your liking, and you'll just end up re-doing it.
Like you said earlier, there are things that she can do and do well. Encourage her to help with these things or ask her if she would like to be in charge of this or that task . Don't discuss what your parents are doing to help.
OP, have a drink or three.
Also, you sound like you just don't like your MIL. No matter what she does, it's wrong in your eyes. Which, fine, you don't like her, just own it. Don't try to play it off like "Oh, I'm just looking out for her because she's trying to do too much, it's not fair to her" when she plainly wants to do all this.
Totally fine if you don't want her to do everything (or anything), but use your words. And this is the second post in 24 hrs where this should be a FI/MIL conversation, not a DIL/MIL one. So have your FI use his words, too. It worked for the last one, it can work for you, too.
My mom got married in 1967 and she said they had finger sandwiches, cake and punch, but she also had the big dress and tea cup veil. I also think that guests expect more now too. I'm sure their guests knew punch and sandwiches was all they were eating because it was the norm.