Thanks so much for your reply and advice Roger!
She's about 31 kgs. Yes, i think they do have the Kode & Carve in those sizes.
The sub-100 ltr boards available are:
-Kode 86 & 94;
- Flare 88 & 98
The 115 ltr board with the fixed "center fin" does have a plug though, which could be modified eventually.
Regarding the sails, unfortunately the only 2.5-3.0 mtr2 sails available are NP xPerience and NP One (Youth).
Any other advice/tips to help her progress into planing and footstraps will be much appreciated.