Faint

How to beat Shelly? most my team is fire types, along with a meowstic and murkrow, here is the list on their moves.

Meowstic (m) lvl 34

psybeam

fake out

disarming voice

psyshock 

Infernape (f) lvl 34

mach punch

fury swipes

fire pledge

close combat

Ponyta (f) lvl 34

stomp

flamge charge

inferno

high horsepower

Murkrow (m) lvl 32

wing attack

night shade

assurance

brave bird

Camerupt (m) lvl 34

rock slide

magnitude

lava plume

iron head

Growlithe (f) lvl 34

close combat

flamethrower

agility

retaliate

I always try different pokemon like Onix,Graveler, or other flying types but they always one shot me with bubble beam, I even equipped my murkrow and infernape with x speeds but shes still quicker