i'm having the hardest time evolving my Chansey in Leaf Green. i met her in the Safari Zone at level 26. EV trained her 252 HP / 252 Def / 4 Spe with the Macho Brace. i didnt give her any Vitamins tho by the time i tried it was already to late and they said they would have no effect.
the thing is i only just learned about the Sooth bell being in Leaf Green so i have ran around with her holding the Sooth Bell for about 3+ Hours.
she is now level 52. she has 59 xp before her next level. after running around for all those hours with the Bell i saved it and killed something to level her up to 53, and still the same thing. she almost levels up and then a question mark pops up, and she's still Chansey.
is there anything more i can do to get her to evolve ?