To whom it may concern, 

Noelia has been  was  engaged  in doing  as an  animal care  assistance  Assistant  and  g  Groomer,
 providing  relief work for LC Veterinary Clinic from March 8, 2004 to April 1, 2014.
Noelia has performed  excellently  extremely well,  adapting to  all  our clinic's procedures. She picks things up very quickly and is very knowledgeable.

Noelia has a very upbeat personality and works well with all staff and clients. She  was  is very dependable, and is quick to get involved when things need to be done.

We are sorry to lose Noelia as our relief technician, but know she will excel no matter  wherever  where  she goes.

is correct my new reference letter?

To whom it may concern

Noelia has been was engaged in doing animal care assistance and groomer,
relief work for LC Veterinary Clinic from March 8, 2004 to April 1, 2014.
Noelia has performed excellently in adapting to our clinic's procedures. She picks things up very quickly and is very knowledgeable.

Noelia has a very upbeat personality and works well with all the staff and clients. She was is very dependable, and is quick to get involved when things need to be done.

We are sorry to lose Noelia as our relief technician, but we know that she will excel, no matter wherever she goes.