Has she got access to my pension or severance pay?

No you are not entitled to compensation for abandonment or desertion. There is not sufficient info provided to answer questions about your rights and entitlements – you need to consult with a lawyer to learn about your rights to property, asset & debt division, pension division, spousal support, child support for an adult child, potential division of severance pay, etc. If your severance is based on your past service (where you receive an amount of severance calculated by the number of weeks or years of past service) then it is more likely to be divisible. However if the severance is really “pay in lieu of notice” i.e. it is compensation for the future number of weeks it is likely to take you to find employment, then it is not a divisible asset, though it does form a part of your annual income which is available for consideration when determining your spousal and child support obligations. The amount of spousal support payable by either of you to the other depends on the annual difference in your respective line 150 incomes and on the number of years of cohabitation involved.