Hi:)
We ( I say we because I suffered every moment with DD1) went through this two years ago!
Yes..it's four apps for medicine and a 'back up' My DD1 didn't actually apply for a back up place because for her it was medicine or nothing but in actual fact one of the Universities that rejected her for medicine, then offered her a place for biomed instead so she ended up with that possibility anyway! (Brighton and Sussex) So they definitely DO offer that in some instances.
I'm sure you are aware how incredibly competitive medicine is.. 60% of applicants don't get any offers.. but that just means you have to be ahead of your game..and she and you.. need to RESEARCH.
For example she will need to sit the UKCAT and/or BMAT entrance exam.. she will be able to register for those (look online) sometime after May.. and sat before the UCAS october deadline. Most universities use the UKCAT some the BMAT. My DD1 didn't apply to any Unis using the BMAT so sat the UKCAT.. it's an exam requiring incredibly quick thinking and processing tick the box style.. and you can get practice books on Amazon... seriously recommend them!
Next.. check out individual Uni requirements.. as well as their A level grades , a lot preselect on GCSES too. Then depending on each Uni's own 'slant' their interviews etc have very different approaches.. my DD went to one which had a very 'science' based interview, another which was heavily ethics based... The Student Room forum has some great info (tho lots of panic and/or snobbery depending when in the year you read!)
Also the style of teaching varies massively.. some are more lecture based, some prefer the 'problem based learning' approach.. DD1 chose the latter, which meant a big shock of independent learning but hands on, as it suits her.
Something else..which we didn't realise at the time, is that if she doesn't get in first time around.. and it's what she REALLY wants to do above anything else.. then she can reapply the following year! My DD1 is now in her 2nd year at Peninsula (which btw is VERY nice and has shot up the league tables if you care about that sort of thing!) and she was very surprised to find that actually going straight from school makes her the baby... many of the students are a couple of years older, because it took them a couple if years to get a place!
Last thought is that if she can get some variety in her work experience that is great (my DD1 worked in local community hospital as a volunteer and also at a special needs camp) and of course a blinder of a personal statement:)
It is a tough course. BUT if she is absolutely passionate about wanting to be a doctor then she won't be satisfied with anything less:):) My DD1 (who is very able..straight A/A*s at A level) has had to work her ass off, a lot is expected of them from day one. But she is loving it...
(phew sorry that was LONG!)
Oh and good luck to your DD :):)