Mimi and Talia may have a WC available to take their 18U Nationals rewards in Ilkley after all, although Talia hasn't entered and may be sitting exams. It seems that the limits due to age may only apply to tournaments from which they earn ranking points. If that's the case, then the WC Mimi took in Glasgow, where she lost in R1, counts towards the ITF calendar year limits but does not count towards the WC limits for her age. Similarly, the WC Talia took in Nottingham 1 counts towards the ITF calendar year limits but does not count towards the WC limits for her age.
Can I ask a question - do you not think they make all of this unnecessarily complicated ? Personally I am impressed that folks like you , Lambda , follow it all but I personally just glaze over. Not saying there shouldnt be limits for young players but it does seem to get very complicated .