as per her statement, she is not dropping any hint as to weather she's gonna repay this money or not coz she's jobless but the amount is negligible.

I swear I only heard that today!! you mean a married couple can go around pleasuring random members of the public with both parties' full consent & knowledge?

it seems you have taken a position and are simply seeking justification which won't be forthcoming. SHE'S MARRIED, LEAVE HER ALONE!! MARRIED WOMEN AREN'T ORDINARY/REGULAR WOMEN!! Be cautioned.