Galadriel Fighting?

[Kuruharan]

galadrial was the daughter of fingolfin, or fingon

Finarfin, actually.

If Sauron would've released all his power, when in Barad-dur at the time of the Battle at Minas Tirith's gates, at Lothlorien, the Forest there would fall.

I think that Galadriel could probably do some of the same types of things that Melian could do at Doriath. Obviously not to the same extent, but enough to cause confusion among an invading army. I think that it would have taken Sauron's physical presence to break through all that and allow his armies to pass through.