So I'm only 18 weeks and my MIL has her spare bedroom for of baby stuff and I have no clue what is…

So I'm only 18 weeks and my MIL has her spare bedroom for of baby stuff and I have no clue what is in there because she said I'm not allowed to know till my baby shower. because she has pretty much got everything my husband knows everything that's in there and she's still not done buying stuff idk how my baby shower is gonna go because she's bought every thing so far now me and my friend that is throwing the shower was like well maybe we should make it a diaper and gift card thing because u don't know what u need I just don't know what to do I'm not complaining because it's her first grand baby but I'm like I would like to know atleast some of stuff that way ik what to tell my other guest but I don't see that happening cause my husband won't even tell me what she's gotten. out child...ugh I feel like she's gone a little over board I mean I love that she's helping out but I would love to buy some stuff with my husband because this is his first child even though I already have two little girls that are his step daughters. Idk am I just over reacting or should I just let her be.....