Spanish Inheritance Tax: How much is it?

[Tony]

My mam died two years ago in Spain, she bought property with my stepdad.
before she could sign her will she died.
With Spainish law who does the property go to.

[Lawbird Lawyer]

Dear Sir,

What nationality did your mother hold?
Was she married to your stepfather?
Did she draw up a will in her home country?
Did she have more children?
What value was the Spanish estate?
Did she own real estate assets (i.e. dwellings, plots of land) in her home country?
In which of Spain's 17 regions was the proeprty located?

Yours faithfully,