Audrey knew this was coming, and she felt bad for being relieved that it was tears instead of anger. It was anger, she wasn't dumb enough to think there wasn't more than a bit of that in there, but it wasn't the kind of rage and jealousy she was used to seeing from these kinds of situations. If this had been Gina instead of Betty in this situation, she could only imagine the screaming and ranting that would have followed. And she probably would have had every right to it, too. The whole situation was shitty, from every angle.
"I'm going to back off," Audrey said. "Like you said, you're here now and I'm the third wheel in this situation, not you, so whatever... ill-defined thing was developing between the two of us, we'll just rewind it back. I just don't want to lose my only friend here, that's all. But whatever I've got to do so that you feel reassured that I'm not going to put any more pressure on this situation, I'll do it."
She didn't have any more than that to give and she was trying her hardest to be as diplomatic as she could be, sparing as many feelings as she could, saying as little as possible. It wasn't easy for her to do this, and that came through clear in her voice when she spoke. She might not have been sure how she felt about Jughead - it was complicated and she didn't have a lot to compare it to - but she knew she didn't want to lose him completely. She also didn't want him to lose Betty. She seemed like a good person, genuinely, and she deserved better than this mess. That was why Audrey didn't want to hide this from her.