I assume you either are paying for the funeral or it is covered by your late husband's insurance or a prepaid funeral plan. And as you are obviously in the U. S. there will be medical bills too, so no, dear lady, do not take on any more expense.
I am sorry for your loss, and for the way you have been treated by your step-children all these years. Frankly, it sounds as if whatever you do now will be wrong in their eyes, so why bother about them?
Presumably, your husband's estate will be divided between you and his children - I hope you have a good lawyer dealing with all this. If you haven't my advice is get one fast - you will very likely need one.
Make it clear when you send these obnoxious adults who have always treated you like spoiled teenagers the time and place of the funeral that you are neither inviting them to yours or paying any of their hotel bills.
You hope they will attend the funeral and whatever it is customary to do afterwards in your part of the world. Here it would be a brief lunch or afternoon coffee and that's it.
Don't let them into your home, or as like as not they will start dividing their Dad's things up with no respect either for your feelings or your right to anything. If any of them have keys to the property, have the locks changed before they breeze in to town.
If they make any spiteful remarks tell them plainly that you have put up with their bad manners for their father's sake, but now that he is at rest, you no longer will do so.
Put yourself and your mourning first now, otherwise it will be even harder to come to terms with your husband's sudden death.
So sad I’ve nearly finished last Jilly Cooper
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