Yeah, as I thought - If I were the maintainer of that project I would have had no issue with her merging that. But I also understand why PRs exist and process, so I would have said, 'yeah, cool, just don't do it again. Nothing to see here, move along.'
one thing to just merge it, but another entirely to reopen it twice disregarding what the maintainer has asked of you before forcing it. At the very least disrespectful and arrogant.