Well, her commentry is rather boring, so I can't blame you there. Still, she's better than Cait Sith for sure (who isn't THAT bad, but doesn't stand up to everyone else really).
Good combinations that I use - Cure-All, Earth-MP Absorb, Final Attack-Revive, Time-All and Barrier-All. Time-All is for putting your entire party in Haste at once. You could ditch both Time-All and Barrier-All for the Enemy Skill Big Guard, but if you use Big Guard the Wall runs out quicker due to Haste being cast the same time. Alyway cast Haste on the party BEFORE casting Wall/Barrier/MBarrier on the party.
My advice is just to stick to the three characters you are using throughout the game. The only exception is when Cloud and Tifa leave the partym where you have to take at least one untrained member with you. If you just throw a different member in here and there, it can hamper your main members' levels.
.