What did Christian mean by “I invited Dani but she’s not coming”

I was watching Midsommar and I found this scene very strange when Christian said “I invited Dani but she’s not coming. I invited her and she accepted but she’s not coming.”

American English isn’t my first language so have I missed something? What did he mean by it? That she just accepted the invitation as courtesy and wont really be coming or he doesnt mean to take her with him??