Her mum kind of had lop ears and was DM, not lopped but not upright if you know what I mean. Her ears are a little floppy but clearly upright most of the time. Could this be where the body shape has changed? I know she's not ideal for breeding but I love her colouring and she has a great temperament. She will not be used to enhance the breed, the bunnies she hopefully produces will be pets and sold as such. I cannot vouch for her breeding other than what can be seen so will not market the kits as anything other than mixes. I had a chinchilla buck years ago and also I've had several other breeds. She is half of they're size, but you're right, she has a much different shape to my buck. She will be my practice breeder and will be bred as backup when I get a nice pure bred lionhead in case any problems arise with feeding etc.
Do you think 5 months is a good age for her?
Not to be quarrelsome, but a DM Lionhead does not produce maneless offspring. Even if crossed to a maneless rabbit, all of the offspring from a double-maned rabbit will have manes. The mane gene is dominant; if a rabbit has inherited it, the rabbit will have a mane. Since this rabbit is maneless, neither of her parents could have been DM.
I totally disagree with what SternRose said about Holland Lops. I have known some very successful breeders that have produced many grand champions year after year, how could they possibly do that if their good rabbits don't produce good rabbits at least some of the time?
The problem with getting good Lionheads is that everybody and their best friend has jumped onto the Lionhead bandwagon, most of them without the vaguest notion of what a Lionhead should be other than having some sort of mane. As long as it has a bit of longer hair around the head (or as in the case of your doe, was born to a rabbit that had that bit of longer hair), some people will call it a Lionhead. And as long as the cachet of the name will sell such animals to an unknowing public that is just nuts to get their hands on a "Lionhead," it will continue. Eventually, the breed's popularity will die down, and the quality of the ones that are getting produced will increase somewhat.
Your best bet is to educate yourself on what a Lionhead should look like. I agree that a show is a good place to find a good breeder, but you may find a better price at their home rather than at a show.