If your employer closes the business on a day when you would normally work, you should be paid for that day but your employer can count the day as part of your statutory holiday entitlement.
Your statutory annual holiday entitlement is 4.8 x 2 days = 9.6 days. If we ignore the awkward 0.6 of a day for the moment, that gives you just 9 days paid holiday. Fortunately, you don't work on Mondays, otherwise your holidays would almost all be fixed as public holidays, allowing you very little leeway for negotiation with your employer, regarding other days off.
You should ask your employer to give you a list of all Wednesdays and Fridays, throughout 2008, when she expects the salon to be closed (and which will therefore count as part of your paid holiday).
At a guess, she'll probably list the following:
Wed 2 Jan
Fri 21 March (Good Friday. NB: The salon is not obliged to close. Public holidays have no special significance in employment law. Your employer can require you to work, for normal pay, if required).
Wed 24 Dec (Christmas Eve - probably little trade)
Fri 26 Dec (Boxing Day)
Wed 31 Dec (New Year's Eve - probably little trade).
If your employer follows the pattern above, you'll be left with just 4 days paid holiday 'to play with' . If she also closes the salon for 2 weeks, while she goes on holiday, that will also fix the dates of those 4 days.
Make it clear to your employer that you're asking about the dates upon which you'll be getting your statutory
paid holiday. If your employer closes the business on additional dates, she'll effectively be 'laying you off'. Under most circumstances, anyone who is laid off should still be paid:
http://www.direct.gov.uk/en/Employment/Employe es/RedundancyAndLeavingYourJob/DG