If you haven't already bought it, I would suggest you purchase the book "The Parents Stress-Free Guide to 11+". I found it invaluable. It gives plenty of information about what to expect, how to approach the practice, with suggested timetables and coping with it all! It also has a section of assessment papers that your daughter can do now, which you then use as a guide to her strengths/weaknesses.
Highly recommended, though I wish I'd found it a bit before the final 8 weeks before the test.
Also, of course, this site is invaluable! Help and advice in abundance.
Best of luck.