We have six children and have had showers of varying sizes for 4 of them BUT--I DID NOT ASK FOR ANY OF THEM, in fact I tried to stop all but the first, but was overridden. It's hard to say no, when people really want to do something for you because they care for you. I refused to have a registry, because it felt like I was asking for stuff and I wasn't. I also refused to provide a guest list (except with the first) because I did not want people to feel expected to come.
#1 was arranged by my MIL, because it was her first grandchild.
#2 was arranged by some ladies in a church we were going to.
#3 was arranged by some ladies in a bible study I was attending (it was very small)
#4 was arranged by some ladies in another bible study, because this child was born with down syndrome and had spent a month in NICU. They really wanted to do this for us. It was huge--like 60 women from our church in attendance.
Finally, with #5 I really put my foot down. I mean it was ridiculous. Someone actually wanted to do another one. I let her do lunch for me and some close friends, but insisted on no gifts.
And for #6, I just said no lunch either. I just did not have the time.
Anyway, all this to say, that I think protocol is just for one and that is all I really expected. Maybe she doesn't expect it either. Maybe someone is doing this for her, so...
If you are not close to her, just ignore the summons or send a nice card. Otherwise just get something simple like a package of diapers or hey how about this--a Cathe dvd for mom to get back into shape post partum (although, that's not exactly cheap)
Okay, rambling.....
Maggie