Baby Shower Problems

So our baby shower is this weekend and since we're military and don't live near family, my friend here wanted to throw us the shower. I had a very specific idea of what I wanted for the shower and we invited a lot of people so I offered to help cover some of the costs and we have no problems with that but the thing is we've ended up paying for almost everything. We've bought all the food expect the cupcakes, were renting the tables and chairs, we bought the favors. We've pretty much bought everything expect the prizes, which were from the dollar tree, and a few decorations. We've put way more money into this than we originally planned and its eating into our budget and now I can't buy little extras we needed. Is it understandable for me to be upset or is it just me being hormonal? I haven't brought up with my friend yet cause I don't want to cause unnecessary issues.