NO WAY would I take it apart to make it larger. Here is what I would do...
1) Find out if they use a bedskirt. If not, buy one at Walmart to match the quilt (or maybe just not do this)
2) Have them put it on their bed with the 112" on the sides and the 94" on the top/bottom. Make them a couple of pillow cases or pillow shams to make up for the difference in the length from top to bottom.
I hope that is clear. Lots of people don't do the old fashioned turn down at the top and bring over the pillows. Many people like to display their pretty pillow cases, which would be perfect for this issue.
It will be plenty long on the sides with the 112" and then the pillow cases or pillow shames (or both?) will make up the difference at the top.
That is one amazing quilt and the will be SO BLESSED to get it as a gift from you. What a wonderful thing to do for them
Suzanne in VT