Never heard of it but here is something I copied from internet (I know... never trust the internet, but maybe it will help)
Dark yellow or orange urine can be caused by recent use of laxatives or consumption of B complex vitamins or carotene. Orange urine is often caused by pyridium (used in the treatment of urinary tract infections), rifampin, and warfarin.
You don't think she accidentally ate a laxitive?
one other webiste says this:
Maybe the fluid is coming from one of the glands in the urethra or the vagina. you should have a gynecologist evaluate this possibility by pressing on the urethra from back to frint to see if any of this fluid can be pushed out in this way. Also look for bulges or cysts in the urethral area.