There is an easy way to fix that.
After they well deserved victory Cordana and Khadgar finally have a time to get closer to each other. Khadgar lies on bed with "I like what i see" expression.
Cordana: Khadgar there is something i must tell you... /removes her armor ....IM ACTUALLY A MAN !!!
Khadgar: What tha fu...
Cordana: This helmet really messes up my voice (Note: Cordana real voice sounds like 45 year old member of biker gang)
Khadgar: What the actual fu....
Cordana: But don't worry, I really like the grandpa types, so i will give you your reward...
Khadgar: NOOOOOOOOOOOOOOOOOOOOOOOO
Khadgar - Bad ending.