I actually think I was in a bit of panic mode as (like I said) I am a complete beginner with frogs.
Since posting she (think its a girly) last night pounced on 5 crickets in a matter of 2 minutes.
I wasn't worried that she is hiding all day, if that is where she feels more comfortable thats fine, I was just worried that the hiding and not eating very much were linked to some problem but as I say last night she had a big feed.
Thank you both for your advice, very much appreciated.