A Wingal (pronounced Wingle or Wing-gal) is the female equivilent of a Wingman. She acts as an agent to seek and secure an appropriate male partner for her female friend specifically in the search for Year 10 to Year 12 Formals.
"I have no one to take to my Year 10 formal. Can you help me out and act as my Wingal." Single Female Friend.
Wingal says "Sure let me set you up with a good, hot friend of mine."