Words holiday or vacation have related meanings in different countries, but will usually refer to one of the following activities or events:
A holiday or vacation trip/break will often be undertaken during specific holiday observances, or be made for specific festivals or celebrations. Vacation or holidays are often used as a time to spend with friends or family.
- A general leave of absence from a regular occupation for rest or recreation
- A specific trip or journey for the purposes of recreation / tourism
- Official or unofficial observances of religious/national/cultural/other significance, often accompanied by celebrations or festivities (public/religious holiday)
So is she is enjoying any of the facilities the appropriate word is 'holiday' otherwise it is always common to say: Today she is on a holiday, she has availed leave.