Image removing that third Sword from your Sword Suspension....
Don't own a Sword Suspension, buy three swords from a sword shop, some are as cheap as $15 each and place them on a 4x4 block of wood or wood base.
The Multi-Purpose Levitation is hidden by BA and it appears your placing the assistant on the swords, but your are really placing her on a plate that has moved into place just before operation.
A Stage Hand is needed to operate the levitation and the 4x4 base can be stablized enough so the MPL can rest on it until the first sword is removed.
A flowing costume on the assistant can add to the illusion.