I am surprised you were sent a round center, that would have not been allowed in any of the round robins I've been part of (22 in the past 15 years) did she write her wishes, how she wants it to continue? I would check with the project moderator and possibly ( depending on what the moderator recommends) contact the center owner & ask ( the journal that goes with it should state the direction she wants rounds to go--- fabric likes, dislikes, end shape-- square, rectangular, ( round???)every rr I've been in has stated from the beginning the size the starting center should be, and the shape... They've always been either square or rectangular, odd shapes have never been allowed.