Getting married to a British Citizen on Tier 1 ET/EP

My girlfriend recently received endorsement for Tier 1 exceptional promise Visa, and we have already submitted stage 2 application. We are also thinking of getting married next year, after she receives her Visa. I am a British citizen. My questions are:
- Can she keep her Tier 1 visa when we get married?
- If she cannot, what are the options?

Thanks very much!

- Can she keep her Tier 1 visa when we get married?

Yes. There is no rule that she must change visas if she marries.