Beth tweeted that clay was still a work in progress for her.
So it's possible she chose this for the clay court practice.
Although that doesn't really make sense - for someone of Beth's profile, a far better idea for clay court practice would be to organise a holiday for a couple of weeks at a clay court academy (in France or Spain), preferably when there was a decent clay court money tournament going on nearby at the same time (very easy, there's zillions).
Getting only one short singles match (always a big chance), and a bit of hitting time, is hardly a lot of practice.
Jazzamay's ranking is only slightly flattered by 5pts at Surbiton. Laura D has earned all her pts. It would be a lot easier if there were more GB 10k/25k tournaments. Then the girls wouldn't have to go globetrotting. Also, we could use the wildcards to help our own players like every other country does - obviously the LTA knows better.