Gifriend response to my text, is it okay?

[nobodyxd]

I texted my girlfriend, that i go to the city, with my friends friend, she knows him, I texted, that i go to the city at 15.30 and be back at least 19.00, because we have to go to other city with my girlfriend at 19.30 just to go buy some furniture, what we dealed with seller. So my girlfriend responded on that text, that i go to the city, (it came out of nowhere for me too) "congratulations, what should i do now" this means like she didn't cared that i wrote her. Got damnit i at leazt let you know, that i go or something like that, i tell her everytime, if i have to go somewhere, after work or something. I asked her why did you respond like that, she said "let me be me". Yes, (but why you have to attack me)?
My English storytellin is not very good :)

[melanieeeB]

I honestly get annoyed if someone has to text me their every step. Just go and have fun

[Anonymous]

Seems just fine to me.

[nobodyxd]

I feel like, that i let her know, like i did wrong, that i texted her that.