state pension based on husband's national insurance contributions....

100% basic State Pension is currently £82.15, on top of that she will have her own additional and graduated pension.

What she can do, on divorce is apply for a pension sharing order against his Additional State Pension, usually the settlement on these is that the wife is awaded 50% of her husbands Additional Pension to be added to Basic Pension increase she can claim off her husband on divorce.
From the figures you give, he gets around £100 per week Additional State Pension, if she could claim 50% or so of this, shes looking at a pension around £130 p/w.
Pension Sharing on Divorce (PSOD) is administered by State Pension Forecasting in Newcastle, but claims need to go initially through the divorce solicitor as part of the divorce settlement.

Claims can also be made for a part share of any Occupational/Private Pensions that he has, this side of the sharing is asministered by HMRC, but again needs to go through a solicitor.

I dont know about the dependents part of the pension that he gets, probably the only people who give you indepth info on this is the company whjo run the pension scheme. Ima sur eif you contacted them, they could give you generla info regardingthis.