Although the process had been a little roundabout, under Gabriel's persuasion, the player named "Eriri" ultimately agreed to join Fang Zheng's team.
Of course, from Fang Zheng's perspective, the whole thing had basically been Gabriel sweet-talking Eriri, like, "You can't lose out or be cheated for just a hundred bucks"... No matter how he looked at it, this was a pyramid scheme, wasn't it?!
But Eriri had not ultimately joined because Gabriel had brainwashed her with pyramid-scheme tactics. On the contrary, she had agreed to Fang Zheng's invitation because his team was overwhelmingly made up of girls. As for why Eriri had made that choice, it went back to how she had met Gabriel.
Fang Zheng had originally assumed that Eriri and Gabriel were friends in real life. But after asking, he learned that they had only met after entering the game, and the circumstances had not been particularly complicated. Gabriel had been grinding levels when she happened upon Eriri's party, where two men were getting handsy with Eriri.
Although the game had a restriction system to prevent male players from assaulting female players, it was not foolproof. Especially since those two men had threatened to kill Eriri if she did not disable the restriction alarm. Eriri had been outnumbered, and she had been badly frightened at the time.
As it happened, Gabriel saw the scene. She swung her One-handed Hammer, lured a whole pack of monsters over, and scared the two male players away, rescuing Eriri in the process.
After that, Eriri developed a fear of guilds made up of male players. When Fang Zheng told her that his team was almost entirely girls, and that he did not look like some sleazy thug, with Gabriel fanning the flames beside him, she ultimately chose to accept Fang Zheng's invitation