This may sound odd but other than if she waits at the door are there any other signs that she may need to go and do her business? I've had her since this morning and have been regularly taking her outside for little walks.
Circling and sniffing the floor are other signs, but if she's properly house-trained, she should just go and wait at the door - if you can't see her, she might whine or bark to get your attention, or paw at the door handle.
How often can you give treats without becoming too much? I've given her one every hour or so today as she's been well behaved but not sure if this is too much
Depends on the dog, how much exercise they get and their overall diet, really. My dog gets small meals as he gets quite a few treats on walks etc, for example.
I've got her at work with me (office with 4 of us in) during the day- today she lay on the carpet next to me and I held her lead in one hand loosely- is this ok or will she be tense with me holding her lead all the time? I've only been holding the lead as she jumps up and barks and runs if someone comes to the door
A loose lead in the office is fine, though it may be easier to tie her to a table or something?
I gave her a bit of banana earlier- I googled and this seems to be ok but just wanted to check with people who have dogs? Not sure if the sugar is bad for a dog
Banana is fine for dogs, just don't give her loads or she might get the runs.