red dragon on hirado quest!

Here i am stuck again fighting with a large red dragon (after fighting dinausors
) in sappire cave! benoit and karin are K.O i have marline and jeanne battling their way through but its been like 10 min i have no more mp although marline is at level 25 her damage attack point are low.
CAN ANYONE
!!!
P.S i playing in normal mode

CAN ANYONE

P.S i playing in normal mode