Since she did such a wonderful job I'd still send her the money even though she said no charge. It will be a testimony to her how great a job she does. Most LA quilters charge 2 cents per square inch. You could go that route and see which is the better price for you. Personally I totally respect great art done for folks and I feel they should be compensated a fair price no matter what the circumstances. At minimum I would send her at least $100 but knowing me and how I appreciate what I can't do myself and have someone that does do it I'd probably send her the $200.