I continue to wonder why she is so passive aggressive. The whole fishing thing makes me very ill. How dare she 'one up' you in this regard. I am very sorry nocode. No good will come from confronting her about this, even though I believe your anger is fully justified. She has proven in the past there is no logical reasoning/discussion when it comes to this.
But...guess what? She just gave you the green light to take your boys camping/fishing. If she can do it, you can do it!! Make the plans now!