You can be proactive about this and you can make a plan for de-escalation if your prophylactic measures fail. Mother and daughter being close is a wonderful thing. Being 'prone to fighting' is not.
The question raises concerns about the impact of a smartphone on children's friendships, especially when one child doesn't have a phone, and offers advice on how to manage this situation.
"Melissa used to feel isolated and anxious, but since connecting with a supportive group of upperclassmen, she's found joy and comfort in her high school experience."
I think I'd want to start by having some honest conversations with your kid about what's going on at home, without focusing on the question of whether or not you'll go back.