I am concerned about her age, as it is well beyond typical menopause.
However, altruistic surrogacy (such as that within families for those unable to carry a child) is OK with me. If this were a 38yo whose own family was complete, acting as surrogate for a sister unable to carry a pregnancy on medical grounds.
It is very rare for women over 50 to seek IVF, and becomes headline news. The cut off is usually much younger, especially if it is NHS funded.