Is she level 144? The sell price jumps quite a bit from level 143 to level 144.
If she is level 144 then this is a known bug. Take a screenshot, sell it, Contact Customer Support and they will reimburse the missing 47,6K ISO.
Steve Rogers never wanted to be a super soldier. He always wanted to be... LumberCap! Leaping from tree to tree as they float down the mighty rivers of British Columbia. The giant redwood! The larch! The fir! The mighty Scots pine! With his best Bucky by his side! They'd sing, sing, sing...
Yes, she’s fully championed. Actually, she’s the only one I never sell just because of that.