You can ask her yourself

"You can ask her yourself. However she might get annoyed being disturbed by you. You know, perhaps she turns you into a frog. Which would be pretty cool by the way." You say calmly.

The soldiers look at each other and then at the big one as if they expect him to make the decision.
The big one is clearly confused as he had received orders to not leave anyone near the Amazons. However someone send by the witch herself must be an exception on this.... or not.

You can hear the wheels turn in his head and then he makes a decision.

"Allright, you go inspect the female bodies of those howrs. But do it quickly." He says harshly to make himself believe he still has control over this situation.

"Right away Sir." You reply mockingly and then walk past them in the dungeon.

In the dungeon the thirty amazons are all naked and chained to the wall.

A few look confused at you as you walk in. Some immediately recognize you as the warrior they met in the woods.

"Hello ladies, I am not exactly a white knight in shining armour but I can set you free." You smile and then begin to remove their chains.

You then notice Ann is not among them.

"The witch wanted Ann for herself she got taken away while we got locked up here."

"Awesome, well there are a few guards outside. You can take them out and arm yourself. Perhaps we can take this castle and save Ann."

You walk outside and the the three soldiers look curiously at you.
"How did the inspection go?" One of them asks curiously.

"They all look splendid." You reply and then catch him right in the face with a punch that knocks him out.
Before the others are able to reply you knock them out as well and the Amazons take their weapons and go to the nearest weapon room to arm themselves.