Answer:
Yes
Step-by-step explanation:
Remember, we are told in the story that the Touhy's did not know about Michael; he was a complete stranger. Just as they gave Michael a place to sleep, food to eat, and home with friends, it would be possible to do the same.
One major reward of helping someone in that way is that in most cases they will forever remain grateful for the help they received, and it will make you the helper feel archieved.
Some challenges that could occur of helping someone like Michael in that way is that they may still fail to value the help they receive.