Many thanks Coaster & Dottie for taking the time to reply.
I have researched elsewhere (& will continue to do so) and I had read that it is ok to feed high quality dry and raw in separate meals, & many recommend this when switching from dry to raw, which is what I was aiming for. Whilst others say not to mix the two, most in that camp seem to be referring to poor quality, high cereal & additive rich kibble - not something 'biologically appropriate' & well balanced like Orijen.
However, as mixing clearly wasn't right for Ripley, I am now trying the raw only approach (as I believe there are enough other benefits to justify persevering for a while before reverting back, unless anyone can give me a legitimate reason to the contrary) and I will keep you informed of her progress.
I chose Nutriment because it seems to be the best raw complete food that is available in small quantities locally - I only have one small dog & one small freezer at the moment; though there is room for another freezer in the cellar if the raw approach works out. For now I am alternating the proteins: chicken, beef, turkey, lamb, salmon, duck & venison - a different one every three days, as each tray provides 6 meals for my little girl.
To be honest, if what she passed this morning wasn't enough to express the glands naturally, I don't think anything will
Seriously, it was good and firm, without being dry or crumbly, and quite bulky too. If it gets too firm, I will try adding water (always filtered; we have a built in unit) or look at reducing bone content - thanks Coaster.
I have to admit, I haven't looked into cold pressed (probably because I never really looked at anything that didn't have a 5* rating in the directory), but as there are some that get a 4.9, I may well consider it if the problem persists - thanks Dottie.