Agree the Sharing List Early
Breeder update arrangements go wrong when nobody defined what updates means. Look at your contract or sale agreement first: many breeders ask specifically for results of named health screening, proof of neutering by an agreed age if the cat was sold as a pet, and occasional development updates in the first year. Write that list down as your sharing checklist, so every update you send is complete against the agreement rather than a random selection assembled under a polite but pressing email.
If the contract is silent, propose the list yourself. Breeders who health test their lines usually care most about screening results and any diagnosis relevant to the line, because that information shapes their future breeding decisions.
Two Layers, One Source of Truth
Keep your complete file private and untouched: every invoice, note, and vet letter. From it, maintain a breeder-share folder holding copies only: screening certificates, vaccination confirmations, dated weight notes while she is growing, and clear photos showing her development, since condition and type are what a breeder reads from an update. Copies matter; originals of registration papers and breed documents should never leave your possession, and a scanned copy serves every legitimate purpose a breeder has.
Note the date on each shared copy. When an updated certificate replaces an earlier one, the breeder should be able to see which is current without asking, and you should be able to prove what was sent if memories differ later.
Keep a Small Sent Log
Record each update in three columns: date, what was sent, and how. That modest log prevents the two classic tangles: sending the same kitten-era weight three times while missing the new screening result, and two versions of a document circulating with no way to tell which is final. It also gives your updates a rhythm the breeder learns to trust, such as a short bundle after each vet milestone rather than a drip of single pages.
Photographs Are Records Too
For a cat from a health-testing breeder, dated photographs deserve the same discipline as certificates. Take a clear standing side photo and a face photo at regular intervals while she is young, keep them unedited, and let the file dates speak for themselves. A breeder judging development, or anyone later questioning identity, coat change, or condition, gets far more from a plain sequence of dated images than from a handful of flattering portraits chosen afterwards. Store the originals in your private file even when you send copies, and name them with the date rather than a description, so the sequence stays in order when it is copied, forwarded, or printed years from now.
Notes Breeders Actually Value
Alongside documents, a few lines of care notes carry real weight: how she eats, how her coat is developing, temperament at home, and any health event, however minor, that touches the lines the breeder is tracking. Write these factually and keep a copy in your own file too, because the note you send often becomes the clearest record you hold. Sending those chosen updates through KinsLe's Family Sharing lets the breeder see her current profile and records without you forwarding your entire private file each time.