For "26016", I have sent an email to FFG but have no luck on the reply yet.
However, your point seems fair enough, but one thing I should say is that
in RRG 1.6 page 30 under "Play, Put into Play"
When an event card is played, place it on the table, resolve its ability, and place the card in its owner’s discard pile.
This sentence implies that playing an event card involves:
1. place the card on the table
2. resolve its ability.
3. put it in the discard.
This mean Flow Like Water (26016) should actually trigger after Desperate Defense (09015) have resolved completely (which included readying the hero).
Hope this also clarifies my point.
Thanks for your hard working.