Are they transferring money to you because they live too far away to come see her and give her a present? If that's the case, I think you should say to them that it's fine to transfer the money, but let me know what you want to buy her and you can get it. I think it's fair to do it that way, as they save on the postage costs etc.

Hope that makes sense, my brain is a bit fried from no sleep last night