Not really, Tamamo's self enhancement spell (the buffs that x2.5/x4 magic dmg in Extra) also called "Curse Boundary Layer" like Dark Sakura's magic in HF but it doesn't seem to be the same as Dark Sakura's at all, that thing is also a mystery. Meph's curses specifically deal with things you can call "curses" while Tamamo's curses are like your typical elemental attacks but called curses for some reason and she also doesn't use most Dakini stuffs.