AITA for disinviting a friend to my birthday after she showed me the food she was bringing?

Hi guys, im using a throwaway for this one.

So basically I (17f) am having my 18th at my house. It’s jsut a dinner with my closest friends. I told everyone they may bring food if they like but im going to doing little cooking like some bbq food and then ordering pizza. My guy friend (“Ryan”) asked if he can bring a mutual friend we have (“Emily”)since they’re dating now. I told him yea sure because he was gonna leave early anyway. She offered to make food and I told her that would be really nice but she didn’t have to. She insisted.

I made a group chat of people coming and I invited Emily to it. I sent a message talking about when to come, to wear whatever. An important thing in the message was about allergies. I have a friend coming with a really serious nut allergy. I’ve never seen them have a reaction but I’ve been told it gets pretty bad. I wrote in the message to triple check your food doesn’t have nuts and to be aware of cross contaminating. Everyone read the message, some replied. Emily did a thumbs up on the message.

Last night me and Emily were talking and she mentioned the food she made. I told her to show me a picture and it was a cake. The cake looked like something my mum had made before and it contained nuts. I asked if it had nuts and she said yes but not a lot and my friend could jsut not eat the cake. I told her I’d rather she just didn’t bring it. She then got mad and said she’d gone through the trouble of making the cake so she’s bringing it or she isn’t coming. I told her then she’s not coming because I was clear about my friends allergy and even cross contaminating was asked to be checked, so why would I allow her to bring a whole cake? She said it was disrespectful to disinvite her and that she’s Ryan’s gf, if he’s going she’s going. I told her no, it’s my party and I didn’t want her there anymore because she was acting like a child. She stopped texting me but then I got a call from Ryan saying i was being a massive dick and she spent ages on the cake. I said I don’t care if it took her two whole weeks to make the goddamn cake, i was specific from the beginning on what u could bring and couldn’t. The only thing you couldn’t bring was something with nuts. The parts where im talking to these two is where I may be TA. I asked if she’s incompetent of reading and comprehension and if she really doesn’t know any other cake recipe. He said i was being a bitch and hung up on me.

Ryan is telling everyone him and Emily are not attending because I called them names and rejected Emily’s cake. A lot of friends, mostly ones not coming to the party, are saying it was slack to let her make something and then uninvite her because of what she made and she put effort in that cake for MY birthday. There’s only three people saying im not an AH and one of them is my friend with the nut allergy.

My party is tomorrow and I kinda want persepctive on this before then. AITA?

edit: the cake is something like a spongey cake but it’s not an actual birthday cake with frosting. I really don’t know how to explain it but it’s seen as more a “treat” cake where I live if that makes any sense at all.