After thinking about the offer to catch the yellow and green pitcher plant Pokemon, Ryan decided that it is probably happy here, living free in the woods. Not only was there that fact, but Bellsprout, its pre-evolution, could be found in the Pokemart for a reasonably cheap price. Why would he take one Weepinbell out of its prefered natural habitat when he could just buy its pre evolution in the Pokemart? He found it a bit unfair for the Pitcher Plant Pokemon.
"Well, Ivy, I have decided to try and escape from this specific Weepinbell. It is happy here, and should remain free. So I'd like to escape, please."