I would assume the OP has a combination of accrued service in both the old and new NHS pension schemes - The old one - where benefits previously accrued can be accessed at 60; then moved onto the new one - which can't be accessed without penalty until her SPA. They can be taken separately at the relevant ages - so at age 60 and then 67.
OP - Just thought I'd mention a few things you might not have necessarily thought of....
It sounds as if you have a large pension pot of S&S investments between you. If having some certainty in your monthly income from these is a priority into the future, do remember to investigate the option of annuity rates when the time comes.
Though they very much fell out of favour in past years due to the dire rates of return, they have made something of a comeback due to rising interest and bond rates.
You don't have to use all of your investments, it's possible to buy annuities that link to inflation, and also provide survivor's spousal benefits.
You might also look into fixed term annuities, in which a lump sum is returned after the fixed term to be reinvested elsewhere - this might prove useful for the period between retirement (say 60) and SPA.
Although it's easy to obtain online quotes to get an idea of returns, a specialist broker would find you the best rate product, and tailor it to individual circumstances (- for instance age, or health conditions might boost the rates).
For tax efficiencies and inheritance planning, you might also look into investment bonds. It's a type of insurance investment from which you can withdraw an income with specific tax advantages for you and your heirs. They can be quite complex to navigate, so it would depend on your individual circumstances.
I'm not advising that either of these products would be suitable for you and your partner, but it's always worth looking at options when the time comes for retirement.
www.moneyhelper.org.uk/en/savings/investing/what-are-investment-bonds