She was going for the Kimura but that girl was quick to straighten her arm so it became a straight arm lock, which wasn't that good to tap to( to be honest). It must've hurt her enough to make her tap or she never felt that kind of sub before and tap because it was unknown to her. Straight armlock will just hurt but tolerable and is not that dangerous to break an arm especially in Evangelene's position. I think she tap because it was a new feeling for her and didn't know what to do
Oh! Sorry I mistook the short haired opponent for a guy. Not the first time, lol, and probably won't be the last time either! She knew enough to tap, being caught in Evangelene's guard and having her arm extended like that. It didn't look like she was in danger of injury and I thought she might keep fighting, but she knew it was time to tap.