How long until I should worry?

[Koumansa]

Hey guys,

How long can my BP (about 1 year old) refuse to eat before I should start to worry?

Background:
A while ago I got myself my first BP (yay!) and she adjusted herself quite well I'd say. For a while there weren't any problems with feeding frozen/thawed mice but about 2 weeks ago she just refused to eat and was more interested in my hand than the dead mouse. She didn't attack it, just looked at it and then left.

Here's what I do to feed her:
She got a lot of space in her enclosure, so I remove part of the half in which she isn't at the moment and put the food box in (just a wide open container so she knows it's feeding time). I place her in there, go grab the mouse and place it in the other half of the box while pulling the prey around a bit.

It gets her interest, she comes to smell what's going on but then goes and does other things. For example, today she just climbed up to my hand and then left again. It's like she acknowledges the fact that there is food but then says she isn't hungry.

Anyway, that's totally fine by me, I just want to know: How long can I let her refuse to eat before bringing her to the vet? I know 2 weeks is nothing and I shouldn't worry. I just want to be prepared in case this lasts a bit longer than hoped.