Yes! Play Sceptile EX!
The idea is good: nurse, nurse, and nurse again: keep your Sceptile EXs alive. Rayquaza will need to put forth some serious effect to get through 150 HP fully healed. And 100 damage for GGCCC, 60 for GCC, and the Grass Healing attack...Sceptile EX is gonna be good.
The reason Ashley "trounched all over" your deck was because running the Espeon/Vaporeon line was very unfocussed. I've tried it as tECh in my Aggron EX deck, Wailord seems to work better. However, in a deck like this, Sceptile should be run straight, by itself, not with any other evolution line. Just tECh the deck to the max and you should be cool.
Pokemon: 21
4 Roselia
4 Dunsparce
4 Treeko
2 Grovyle
3 Sceptile (Energy Trans)
2 Sceptile EX
2 Wobbuffet
Energy: 17
11 Grass
3 Rainbow
3 Boost
Trainers: 22
4 TV Reporter
2 Oracle
4 POR
4 Pokemon Nurse
3 Rare Candy
2 Crystal Shard
2 Weakness Guard
1 Town Volunteers
You should be able to set this up FAST, so Ditto won't be needed, turn three Slashing Strike sounds pretty cool to me. Shard is enough tECh. You could make the following changes to sacrifice versility but increase speed:
-1 Sceptile (Energy Trans)
-4 Dunsparce
-1 Grass
-1 Nurse
+4 Wynaut
+1 Rainbow Energy
+1 Multi Energy
+1 Oracle
Try to gather Wynaut and a multi or rainbow energy in your hand. You may get better results than Dusnparce, since Sparce searches for basics, and Wynaut can get Sceptile EX out faster. The Wobbuffet stay for anti blaziken EX tECh and everything else.
Good luck with the deck...
Wooper