Okay, we need to get back on topic here. And to do so, if Erika could be rematched like the Gym Leaders in Pok?mon Emerald, here's my ides of what her Pok?mon would be. (The first battle is just for reference.)
Gym Battle
L29 Victreebel, L24 Tangela, L29 Vileplume
First Rematch
L36 Hoppip, L40 Victreebel, L37 Tangela, L40 Vileplume
Second Rematch
L41 Shroomish, L41 Skiploom, L45 Victreebel, L42 Tangela, L45 Vileplume
Third Rematch
L46 Skiploom, L46 Breloom, L50 Victreebel, L48 Tangela, L50 Vileplume
Fourth Rematch
L51 Tropius, L51 Breloom, L51 Jumpluff, L55 Victreebel, L53 Tangela, L55 Vileplume