Azfiddle - I concur with the others, if you can justify the commitment and you think after speaking with her that it will be of benefit, go for it! While I've never had a cycling coach, I've been working with other coaches for a few years now and found it worth far more than the expense. It is great to have access to their knowledge base and help in translating what your body needs to fit with your goals and time.

BTW, you are not as slow as you think, I am slower My average speed is between 12-13 and that is OK, & it explains why I usually ride alone. If I didn't have neurological problems in the bike I would seriously consider hiring a riding coach to help with gaining riding strength and speed - endurance was never my problem in the bike.

Whatever you decide, have fun!