That is good news, solidarity. If the change you need are in line with your original request, then the writer should do it for free. However, if the changes are those that you have decided on reflection and after submitting your original request, then it would usually be classed as additional work and thus require further payment. When I am writing for a client I always says that I will make any reasonable changes free of charge, reasonable meaning that they aren't asking for whole new sections, etc., just some minor modifications.
If you can do the changes yourself, it will save you some money and allow you to give some 'shape' to your final work.
Ok so I am wondering, did you get your paper?
notalent, I am sorry to hear about your loss. Much of my work comes from students who, in the main, are very capable of completing their assignments but are faced by unforeseen circumstances. Since they are not accustomed to 'handing their work over' to someone else they can be very anxious. This is understandable, but if you choose the right company or person then this can be a good option for you during what must be a difficult time.
Do your research before selecting a company and, if possible, get the work completed in time for you to make any amendments if you are not completely happy with the final essay.
Good luck and let us know how your experience goes.