Perry,

that bow should have a 10 lb range of adust. You simply back out the two large allen bolts where the limbs attach to the riser. But you cannot back them out too far or the limbs will fall off[]

Do you know the weight range of the bow?

Also do you know your wifes draw length, amd the draw length of the bow??

If the draw is to long it can be much harder to pull back.