Is this normal for a girl to act this way?

My girlfriend and I have only been together for about a month, and it’s been great so far. Nothing transcendentally lovey-dovey about it, but we have a great time together (no bias).

She went to Country Thunder (a big music festival) this last weekend and took a bunch of pictures. When she tried to upload them on her computer from her memory card, she apparently lost all of them. I guess she was really excited about all her pictures and she had a mini-meltdown. She immediately stopped being in a good mood and said via text “I’ll just ttyl when I’m in a better mood.”

….Does this seem weird to anyone else or am I just missing something?

PS – For context, I’m 23 and she’s 22.