Give her a bit of time yet but if she doesn't turn up i wouldn't give her the satisfaction of ringing her and letting her know your annoyed.
Don't you just hate some people??!!
This happened to me once a few years back. The person was very keen on the phone but then didnt turn up.
That night i had my saddle stolen from a locked tack trunk!
Not saying this will happen to you but just make sure everything is locked up well when you leave today!
I'd call! I was 10 minutes late to see my share horse and the owner called. I wasn't offended and think it's fair enough if you're giving up your time!
I did also phone up the last no show when I sold my horse and left a 'thanks very much' message on her machine, as I had taken time off work, paid for childcare etc etc and I think it is very inconsiderate to just not turn up. I wouldnt do it to someone else and I feel that if I made that person feel guilty for the 10 secs that they had to listen to my message it may make them think twice before doing it again. Probably not though. I hasten to add that I started my message 'I hope you are OK and nothing bad has happened to prevent you from keeping our appointment but......."
I would phone too, but would probably leave it half an hour after the time they were meant to arrive, just because its easy to get lost around our lanes, saying that phone signal can be hit and miss too.
I wouldn't bother if they are that inconsiderate.If they tell you a time they should at least be there or if they are running late then they have your number too you would hope.There are far too many hoof kickers around with nothing better to be doing it seems.
where are you there is a lot of problems on the motorways today m6 is grid locked for 10 junctions. this is not an excuse not ring of course but she might have got stuck etc