Kobayashi Maru time buddy. Time to get creative.
Hug kiss kill
If she didn’t understand what mansplaining is, it isn’t mansplaining when correcting her.
Even if it isn’t, she’ll perceive it as mansplaining due to her incorrect understanding of the term. Our boy here’s damned either way.
How about: Wait, let me illustrate how mansplaining works…
Ask her what she thinks mansplaining is and listen intently to the answer.