This guy doesn't know what interactions she's made. He can't make claims for something he wasn't there from. Kibbles has been with them enough to see them as her friends, it's her life. He has no say of what she should do where things stand. And her friends need her. Sasame especially. Her arm was hacked by that no good mercenary or whatever his occupation is. And we haven't even seen if Sasame's arm is damaged to the point they have to amputate it. The sooner Kibbles goes to support her friend the better.
Dude just let her go to her friends, they need her especially after what just happened