Maybe she was having a bad day. Maybe she had a headache or was tired. Maybe something else aggravated her and she was upset at that rather than this. I wouldn't take it personally.
Also, I would suggest giving her the information differently. When you approached her you could have said: "I'd liked to pick her up at X time because we got invited to hang with some other dads and daughters ahead of time." Rather than just blindside her with an early time.
Not a big deal really, but I just thought I'd give that perspective.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018