Her head shape/size says it is a female, add to that size of 4,5" you're saying she is, but it is not very reliable method, thus I said I suspect

the only way to tell is to check for nuptial pads if hear a call.
you really need to get a temp controller or at least get a lamp with a dimmer, to keep a heat lamp full on constantly is no good, big temp swings are no good either..
Yes we place a frog in a separate container, I always combine it with warm bath, so while they are soaking I'm cleaning.
Yes is it same old bacon lol
one thing you should always remember - to never use UVB for albino! Ever!