She is going to apply for all of the following refunds.
Train from Dusseldorf to The Hague, missed connection and so she had to get loads of extra connections and got there really late. I think she intends to apply for something and she may or may not get some or all of the money back.
AirBnB part 1 - the first one was cancelled with no warning. She had to book another at the last minute and pay a premium for it. She is applying to be refunded for the cancelled one (and I think they already have done) but she is also saying that she paid top dollar due to having to buy at the last minute and that that was Airbnb's fault in that they had told her she had a place already booked. She is hoping to get some or all of the difference in price, and also the travel costs from the original place to the one where she actually stayed, paid back by AirBnB. The moral justification seems obvious there but whether she will get it I don't know.
Easyjet - cancelled their flight and said as long as she gets on the next Easyjet flight to Lisbon (which is on Weds) then they will refund the cost of the replacement flight, though she will have to fill in some forms. So, although she has not got it yet, she hopes to get that refunded. Additionally, the fact that they said she had to stay until Wednesday to get the free flight literally forced her to stay in Amsterdam for two more days and so she had to pay for an Airbnb and food - she is hoping to be repaid for both of those and at the moment I think Easyjet have said "maybe" and she has to fill in some forms for both of them.
AirBnB part 2 - the place where she stayed in Amsterdam is a basement flat and it had no lock on the door. As a result someone opened the door during the night (hopefully by accident but possibly with malicious intent) and the basement flooded. As a result of this AirBnB have refunded half of the price of the stay, so I guess that bit is dealt with.
So the thing is, there are numerous compensations involved here to which I think she is justified - some have been dealt with (the airbnb accommodation ones), some have been promised but not yet actioned (the Easyjet replacement flight), some they have said "maybe but you need to apply" (the extra costs accrued as a result of the errors of Easyjet and Airbnb but where the money did not go to them), and finally, some she hasn't really looked into yet (the first train journey).