Surely it wasn't her first cycle if she is available for a split? She must have given success to another mama prior?
I looked for proven and a good producer when doing the donor egg route (before switching gears to donor embie). I wanted a donor with at least a bachelors who seemed to be fairly well above average intellectually. I wanted a good family healthy history. On the shallow side, I wanted a donor with a small nose and full mouth and dimples. Being single I wasn't especially interested in a perfect match for my appearance because with egg and sperm donor's appearances beng different from mine and producing a child who might not resemble me much, people would just assume my child looked more like the father and not me.
When I turned to donor embryo, the profile I chose didn't tell much about the appearance of the donors so I left it (not without trepidation) up to fate/faith what my kids might look like. The egg donor was a 31 year old family friend and had never donated. I don't know how many fresh there were but one took and eighteen were frozen. They then had twins. Donated embryos and first recipient had twins. Five blasts were left when I chose them and I too had twins. So older and nonproven worked out pretty well! And my kids actually look like they could be my genetic children, oddly enough.