AITA: Wedding invite

AITA: kinda a long one so buckle up. backstory…i got engaged in november and my wedding is in august of this year. our budget is like less than $7k, i’m diy-ing EVERYTHING, planning everything myself, making invitations myself, the whole nine. the venue we are looking to book has a max of 40 people but it’s all inclusive. i come from a hispanic family, we multiply like rabbits so there’s a lot of close immediate family and my fiancés family too, he’s the youngest of 4 and all his siblings have kids. i am perfectly okay with them being there, i love having kids at weddings. ANYWAYS there’s this girl i’ve known for about 3 years, she’s an old coworker. during that time, we’ve hung out like 5 times. yeah… 5. we text on and off too, we’ll go a few months without talking. i explained to her the situation, that due to low budget, we cannot afford more than 40 people to go, all of which the spots are taken but that i would love for all the women that i love but aren’t able to attend the wedding, be a part of it by extension and go to my bridal shower. i think she thinks we’re better friends than we actually are because she got really upset saying that it’s so fucked up that i didn’t invite her because we always talked about going to each others weddings. i thought she’d understand but apparently not. so AITA for not inviting her to my wedding but inviting her to my bridal shower?