I've been fighting against Shelly (gym battle) for hours, and continue to lose to her. I honestly don't know what to do; any suggestions? For reference, this is my team:
Ampharos, LV 35
Item: Telluric Seed
Ability: Static
Moves: Thunder Shock, Power Gem, Thunder Wave, Confuse Ray
Swoobat, LV 35
Item: Metronome
Ability: Simple
Moves: Air Slash, Air Cutter, Confusion, Assurance
Linoone, LV 35
Item: Quick Claw
Ability: Pickup
Moves: Headbutt, Slash, Pin Missile, Sand Attack
Pidgeot, LV 35
Item: Protective Pads
Ability: Big Pecks
Moves: Quick Attack, Gust, Twister, Sand Attack
Growlithe, LV 35
Item: Telluric Seed
Ability: Flash Fire
Moves: Flamethrower, Flame Burst, Reversal, Growl
Serperior, LV 35
Item: Rose Incense
Ability: Contrary
Moves: Leaf Blade, Leaf Tornado, Slam, Leech Seed