Jellyfish makes the same move but loses anyway...on the other side, jellyfish plays out the game.
If I set up the game with jellyfish making the alternate move (hitting two blots) the jellyfish opponent immediately doubles, clearly confident of the win. (Note that when jellyfish plays your side after the double blot hit, it rejects the double offer)
Seems you have made correct move, but you a likely to lose anyway. Good luck!