If I am not mistaken, this is a 'window grow'?

I mean all sunlight and no lights????

If so, you dont need to force flower her at all. Its almost mid August and the daylight hours are now getting shorter. Rapidly.

She'll start on her own in the next 30 days, if she hasn't already.

Also, she is pretty small so don't feed her too much.

Keep up the great work.