AITA for not going to a party I was uninvited from

For background, I am a 26 year old female who's started my own catering business. It's still very small but growing quite fast. This business has only been operational for 1.5 years.

Last weekend, a friend (?) of mine was planning on hosting an event at her home. Mutual friends of ours were in attendance. She told me about it over lunch and asked if I'd be available to cater as well. I obviously accepted. However, she didn't want to pay and used the "we're friends" excuse. I told her I'd happily be there to support her but as far as my business goes -- I expect full payment. During this week, she told me that she found another caterer. I didn't throw a fit over not being her caterer or anything, so I was cool with it. The issue came in, when she said "so now you don't need to come" I took that as her uninviting me. I didn't push, I didn't pry. I just wished her well and hoped her event goes well. The event happened yesterday (Friday night) and around 20:00 p.m, my phone was BLOWING UP with texts from her saying I'm a bad friend, an AH and that if I was jealous over her choosing another caterer, I should've accepted her terms. I told her that she uninvited me and that me not coming wasn't about the catering job, I asked if she really did uninvite me or if it was me taking what she said, wrong. She didn't reassure me on that and just kept yelling at me over the phone. Some of our friends have reached out asking why I wasn't there and I told them the truth, some are calling me petty and others understood my position and said they would've assumed the same thing.

AITA for not attending?