You could try Association of Mauritian Archives (its in French but you can get Google to translate), I will have a quick look for you now and get back to you or you can see www.amamu.org
(NB. I have had a look their are a few Lazare's called Marie but not with Irma as a second name. I saw a Marie Edith and a Maria Eliane. If you go onto the site its in French but if you click on Google Translate you will get a fair idea of what is available.
Also, you can request information from National Archives (Civil Service) in Mauritius but it does take a while (think in terms of months rather than weeks). The section is called "Registry" and their direct email is firstname.lastname@example.org
When I got some information from them they only provided the Reference numbers and said if I wanted birth certificates I must request information from Civil Status Office- email@example.com