Yeah and if she is in season (which is every 4 days) you wont have to wait too long
I should have added that in addition to closing all doors you should seal them, and wardrobes/closets, with a towel, remove any cats or dogs from the area (and if possible, keep them outside). Although my cat does let me know where a hamster is hiding usually
but she is well trained
I once saw a picture of a bucket trap with a hamster tube snaking its way up into the bucket but using "stairs" means you can sprinkle food on each step. I often dangle a millet spray near the edge of the stairs - as the hamster reaches to eat the seeds they fall in which is nasty but gets them every time. I always make sure there are some in the bottom for them to munch on. Apple slices and peanut butter have far travelling scents but not all hamsters like peanut butter. I always get success with apple but use some of your little one's favourite treat as well.