Would you help in this situtaion or keep your distance?

Someone who has consistently and purposefully hurt you over a length of time is down on their luck. This is someone you were once close to, things went sour, and from that point they have attempted to make your life miserable at every turn. You have managed the situation and taken the lumps without any permanent damage. Now that this person is down on their luck you happen to have been the first person they called. You have a skill that can help them get back on their feet more quickly than if they were left to do it alone. Do you help them out because you can and it is the right thing to do? Do you let them deal with it alone because they have so consistently tried to hurt you?

If it matters, this person’s luck turning around will benefit you and your family members.