Snacks,

I asked this question when Olivia got to around 12 months......from memory, there were no breakthrough suggestions!

(Olivia never crawled in the end...just bum-shuffled.)

Lexie only started crawling at 12 months.....she is now a demon crawler.....

Just keep doing what you are doing. She will be building all the right co-ordinations and body strengths on her attempts. The frustrations she demonstrates: that is, I think, often because they get to physically and mentally tired from the trying!