160k value less mortage of 107k = £53k.
£53k divided by two = £26k each.
Fees will be a couple grand so you'd be looking at around £23k each. Her calculation is correct.
But you paid £11k deposit. So I'd expect to have £23k + £11k = £34k returned to you.
Above assumes zero marital debt.
Also, certainly in Scots law. You also split the pension contributions during marriage.
Pensions are tricky to divide because they accrue over time (earning interest).
I would look at present value of pension and subtract pension value at time of marriage, to start with. Divide that sum by 2. Also including your own pension value too.
14 years is a long time and personally I'm against including pensions in marital division simply because they won't be claimed until 40 years after divorce.
However the law says they are to be included, what's earned during marriage at least.
Naturally she will avoid splitting a teachers pension. They are very generous in the public sector. However you are entitled to include it.
Also consider as assets the cars, savings and marital debts such as cost of valuations, transfers, pension extraction etc. Which should all be split.
Why are you divorcing?