Only if she can show that she has been earning the equivalent of £18,600 per annum for the 6 months prior to submitting her husband's spouse settlement visa application and she has a confirmed job offer in the UK to start within 3 months of arrival. The UK employment also has to meet the minimum £18,600 p.a salary. Alternatively, they would need £62,500 in savings, held in an accessible account for at least 6 months before the application is submitted.
The visa fee will be £956 and if the application is successful her husband will be granted an initial 2.5 year visa, after which he will have to apply for a further 2.5 year period of limited leave. Whe he has completed 5 years of residence he would qualify for permanent residence (ILR).
https://www.gov.uk/join-family-in-uk/overview
Edit: In addition Wanderer's advice, arrive in the UK alone and apply for husband after employed for 6 months @ £18.600 p.a