My interpretation?
How many ways is there to interpret it?
And it came to pass at the end of two months, that she returned unto her father, who did with her according to his vow which he had vowed: and she knew no man..
So what did he vow?
And Jephthah vowed a vow unto the LORD, and said, If thou shalt without fail deliver the children of Ammon into mine hands,
Then it shall be, that whatsoever cometh forth of the doors of my house to meet me, when I return in peace from the children of Ammon, shall surely be the LORD'S, and I will offer it up for a burnt offering.
What was the next thing to come through the door?
And Jephthah came to Mizpeh unto his house, and, behold, his daughter came out to meet him with timbrels and with dances: and she was his only child; beside her he had neither son nor daughter.
So what is YOUR interpretation of it?
Let me quote post #58: