Have I offended my lecturer?

It sounds trivial and I wouldn't usually care, but I really want her as my dissertation supervisor for my final year project next year so I'm worried this may potentially affect my chances...

So I was looking at the dissertation topics handbook, and I really liked her research area so I emailed her saying something along the lines of 'hi, i really like the look of your research area bla bla and I was wondering if it was possible to know what techniques and analytical instruments you normally utilise in your research projects as your page on the handbook sparked my interest'

Obviously I made the effort of making it sound polite, etc but she hasn't replied. I've never emailed her before so I don't know if shes usually bad at emails, but from the Q&A sessions she has after her lectures she seems very kind so it seems unusual for her to ignore emails...

Thoughts?

I don't think you have offended her.
She might just be busy and might have missed your email.

Assuming the "bla bla" is a bit of editing by you and not what you actually wrote in the email I don't see how it could have offended her.