No. She didn't. She could have been a lot nicer because it was her FRIEND who asked. It's not like he volunteered the information from out of nowhere. And, unlike the other times, she is actually doing it for reasons that are completely selfish (because of 'character development'). And that's what we're saying makes her rude, albeit, it's actually a result of character development not the lack of it and she's only been rude ever with blondie.
Ok so I already read spoilers and let just say for now the reason she says it is to protect her friend and her mental state. She is still scare of being “forgotten”, and she still want to lead a “normal” life. And the only way for her to lead that life is to not get involved with Blondie. But spoilers, this will lead her to more character development like you have stated. For now this decision is completely based on her purpose, to be “normal”. But of course I’m expecting her to change and embrace the world she is currently in. I do agree it is rude but there is a reason behind it. The MC have been shown several time that she is very respectful like how she stay with blondie to keep he/her company, and helping out others. I’m just saying why she is acting like this. But I really like her as a character, she is realistic and isn’t some fake cute MC that rely on a guy for everything. And all of her decision is something all of us atleast have once done. ╮( ̄▽ ̄)╭
Why is she always rude ? (੭ ˃⌓˂ )੭⁾⁾ ( ʘ ه ʘ ) i like the blond hair ❥