I must need to go to charm school or something, because I don't see anything wrong with that!
To me it seems like she's just letting people know that they don't need clothes, and diapers are something they do need. I don't think the fact that she used the word "blessing" means they can't afford diapers, I think that's just how some people talk. My good friend always says blessing when she means thankful. For example I offered to bring a dish to her house for a get together and she said "oh that would be a blessing!", doesn't mean she can't afford to feed her family though. LOL, far from it in fact.
And the breast pump thing? Well, I guess if her other one got run over than she does need a new one right?

I mean it's not unheard of for even otherwise responsible people to be forgetful is it? I could see something like that happening in my family, I certainly hope that if I were to accidentally break a gift it wouldn't make people think I was unworthy of receiving them in the future.