Friend Forgot Party Time Change, Now Wants Payment for Gift

I’m feeling pretty heated right now and need some perspective.

My friend’s daughter is turning one today. A few weeks ago, my friend asked if I could make truffles for the party. I agreed, and she mentioned she would reimburse me for the ingredients. However, because truffles are expensive to make and incredibly labor-intensive, I decided I would just gift them as the birthday present instead of asking for money.

I spent all day yesterday in the kitchen making these. I had to wake up super early this morning to finish the final touches and get ready for the 9 AM start time listed on the invitation.

I showed up at 9 AM sharp, truffles in hand, and the place was empty. I double-checked the invite and it definitely said 9 AM. I called my friend, and she casually told me that the time had been changed to the afternoon. She admitted she “forgot” to tell me, and apparently, I was the only guest who wasn’t notified.

After working so hard yesterday and sacrificing my Saturday morning sleep, I was (and am) pissed. I havent told her if ai can make it in the afternoon yet

WIBTA if I charge her the full amount for the ingredients and my time since I might no longer be attending and these were meant to be the “gift” or refuse to go to the afternoon session because I’ve already wasted my morning and now I “have other plans” (which is mostly just being too annoyed to celebrate)?

EDIT: I did not tell her I would gift her the truffles, I had just decided that myself

EDIT: A lot of people are asking for more context so here it goes. We moved to a new city last year so I’ve been trying hard to make new friends and I’ve been hanging out with this friend and some of her friends, but I’m not “in” their little group yet. I’m a very helpful person in general and have a lot of party planning experience, so I actually helped her decide many aspects of the party, like how much food, what types of food, how many drinks, etc.

We were exchanging info back and forth about this party constantly and I even lent her a bunch of my own decor stuff to use for the cake table. Also, she specifically chose 9 am because that’s when her daughter is most alert and happiest, so this was supposed to be a brunch type birthday party. Given how much we talked about the details and the fact that she has my decor, I really don’t feel like this was an easy thing to “forget.”