Apparently at that joint meeting, Barack went one step beyond his earlier calls for his donors to help Hillary with her debt - he and Michelle wrote a personal check for the maximum amount to help Hillary pay her vendors. His National Finance Chair Penny Prizker did the same.
Hillary has stated that she is not looking for help to repay the $11 Million or so that she loaned herself, but she is looking for help with paying off the money she owes to her vendors. A lot of these vendors are small businesses - events companies, catering firms, landlords renting office space - who can be hard hit if a major client is unable to pay. So it is right that these debts be paid off and a nice gesture that Obama is willing to help with this personally.