I haven't read the raws, so I'm gonna guess what happens. They invite her out, and explain the situation. She initially believes them and feels relieved. As the meeting goes on, she notices how close and vaguely flirty Takeda and Takizawa's interactions are, and decides that they either lied or they'll end up as a real couple very soon regardless of how they are now. She gets mad/frustrated and leaves. Takizawa doesn't realize she made an enemy that day.
See you guys tomorrow.