Reposting Sibele's pedigreee:
I am afraid that this is insufficient as a proof. What we would need is proof that the soft curl ear on Lynne is pure. Any of the soft curl tigers on Lynne's side of the pedigree could hide a more recessive hidden ear and what we could be seeing is Odyssey Tiger Fold showing over a more recessive ear.
There are a couple of ways forward. One is to try to go back through Lynne's family tree painstakingly until a proof of purity can be achieved (if the ear IS indeed pure). The other, often more easy, option is to "pull the hidden". You open the New Born Kitten and run it with a more recessive ear'd cat showing Tufted or TigerFold for instance and try to pull the hidden ear from the New Born Kitten. If it is Soft Curl then you have your proof. Most proofs need to go through this 2-stage process of putting the two traits together on a cat and then pulling the hidden on the kitten.
Either I or Arwen Swordthain are happy to go over Lynne's pedigrees if you want us to. We can chat inworld if you wish.
Thank you very much for taking on this project. We LOVE people who are willing to do test breeding for the charts.