How can my eevee evolve into Espeon/Umbreon?

I have Fire Red and Leaf Green. In Leaf Green, I have Lv. 60+ evolutions of eevee (flareon, jolteon, Vaporeon) and i'm looking to complete my collection with Umbreon and Espeon! Here's the issue. I also own Ruby. I read the manual and my first attempt to get an espeon resulted in failure!!!

My first eevee was "Happy Beyond Words" The clock in Ruby was set to the correct time. I traded my eevee over. Nothing happened. I traded it back to LfG and it's happiness was reset.

My second eevee was hatched from an egg i bred from my original flareons. It's was at Lv 6 and "happy beyond words." The game manual says that the Umbreon/Espeon evolutions are TRADE evolutions. So i then tried trading to FR. Again, nothing.

I'm hoping to try again. My Eevee is the same Lv. 6 eevee. I Raised it's happiness level once again. and Now it's Lv. 41. I'm afraid that if this third try fails, i'll have to do this process all over again....so how can i get an Espeon? (Or umbreon??)

P.S.- I DO NOT want to hatch a baby Eevee in Ruby because my LfG game has Unlimited money (This is where i raise my pokemon).

.....Coliesium is out of the question so please don't mention it!