That says as much about Barbara Bush as it it does of Hillary. Would have cost BB nothing to to help find him a new position.
The guy probably immediately - and rightfully - sued the WH HR, which makes you unhirable and blacklisted everywhere, right or wrong.
You presume that BB knew he was unemployed as a result of him helping her.
Actually, the attitudes of the White House Staff - USSS agents and the WH stewards - toward the Bushes (both 41 and 43) is exactly the opposite. ALL the staff got Christmas cards from the Bushes every year, the Bushes knew the names of their spouses and children and treated their staff with genuine respect and friendship. GW Bush did things for his staff and the military that the press has never reported on and many things that he purposely kept from the press; not my favorite president in terms of policy, but a good guy with a great sense of humor.
good chance she never found out because he never said anything to her and the relationship that Barbra bush had with him was just that of someone that she knew who worked on computers she asked a favor of.