I gotta stop doing this too. But she has to be good enough to survive 1-9. I guess the BK could rescue her then I wouldn't need to train her.
I avoid using laguz royals as much as possible since they're broken and don't gain much exp.
Don't use laguz cause they gain little to no exp, have transformation issues, and can't counter ranged attacks (howl, quickclaw, and maelstrom don't activate enough, shriek sucks)
Don't use any of the forced characters except Ike, Elincia, Geoffrey and Micaiah ONLY for healing, Reyson in endgame
Only train a few DB members cause I don't care about them much as characters
On defeat boss chapters, I don't kill the boss until all other enemies have been killed (Dheginsea, Sephiran, and the boss of 3-2 are exceptions)
I send the allies in 3-13 down to battle the GMs and watch their asses get kicked
Never send the DB to battle the GMs cause I don't have the patience to make them as high and I like the GMs more
Sell all skills and weapons that I won't be using in endgame
Max out my characters' inventories
Avoid forging until endgame
Avoid bexp until part 4