Am I in the wrong?

So, a few months ago, my best friend said she wanted to throw me a baby shower and of course I was excited and grateful. She told me she wanted to do it herself so I’m surprised when I arrive.

I was going to hire out a venue for it but money is tight so I decided to just do it at my house but my best friend was going to decorate it for me.

So fast forward to a couple weeks ago, she messages me asking for £20 to go towards the decorations and cake, so I gave her the £20 and assumed that would be it as I didn’t want anything over the top or big for my baby shower, I wanted close family and friends. She then comes over last night to discuss food and people who are invited and she asks for another £20 for the cake as she is making it for me. I told her money is tight as I’m no longer working due to my pregnancy and we only have one income which is my husband but we have a house to pay for and all the other bills that come with a house as well as food and gas and our spare money goes towards things for our daughter as I’m due in 7 weeks. So I asked her Where my other £20 that I gave her and she said she spend that just on decorations and she also put £20 towards it so she spent £40 just on decorations and nothing else. (I’m also gonna add that she is loaded) She started getting angry with me telling me that I’m being ungrateful and that she’s not ripping me off even though I never said those things to her, I just asked where my money was going. I said I will give her more money but I can’t give another £20 as I need to pay for all the food and my outfit and she just lost it on me and walked out.

She’s now texted me and told me not to contact her until I apologise. I texted back and said to just cancel my baby shower as I don’t deserve to be treated like this because I don’t have the money to pay for the things she’s buying.

I am completely grateful that she wanted to throw me a baby shower, but she knew that I don’t have a lot of money and we are struggling more as my husband is the only income now and we have a baby on the way.

Am I in the wrong here?