Now I want to say and remind you of wanting to go to pure Katahdins,
Not sure about Katahdins but with Dorpers you can register percentage ewes when out of a registered ram. You might want to check on this since if you really want to keep her, Ringo is a registered Katahdin. If you can register her as a percentage, each time you breed her successive progeny to a registered Katahdin you will be able to register them as a higher percentage. At a certain percentage they count as and can be registered as purebred.
I would not be too quick to sell her female offspring out of Ringo either. Remember that when doing an outcross breeding which is what produced this ewe lamb, you always come back to the line you like (Ringo) to imprint and strengthen those genetics while retaining the hybrid vigor that you liked in the outcross. A closely related ram could be used, or just breed to Ringo again to produce a very tightly bred daughter that will have doubled up in his good qualities. If there are any flaws in Ringo or his close relatives, watch the resulting daughter cross carefully for them. If she shows any of them you can cull her then. Double breeding of father/daughter, mother/son, brother/sister is a time honored way of doubling up the best genetic qualities of an animal or their bloodline. As long a you realize inbreeding also doubles up any weaknesses and are quick to cull those individuals, you can improve your flock faster.
When selecting registered stock, compare their pedigrees and decide what you are aiming for in your new flock. Choose those animals that have the same bloodlines instead of just buying unrelated animals because they are registered. The safest way to start a flock s by line breeding. This is breeding related animals and bringing in new blood through a registered ram as you need it The ideal you aim for should be a flock of animals that are very similar in type, growth patterns, etc. At that point you have reached a good place from which to branch out and try new bloodlines you think will improve what you have produced. Just remember that not every cross will be successful and not every bloodline will blend or "nick" with yours.
Building a good herd or flok of larger livestock is a long time commitment. If you want fast results go with rabbits. Rabbits are a great way to learn abut genetics since they breed and mature so fast. A crummy litter only takes up 4 months of your time as opposed to losing a full breeding year with larger animals. I love rabbits.
I could keep her for another year and breed her to Ringo. See what she produces and how her parasite load is.
If you decide to sell her you could sell her with small lambs at side for a possibly larger return. Be sure to enlarge and frame those photos of her and hang it as a group with the painting.
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