Sorry for the caps k heres the 2 questions

1.i bought a 08 albino ball female about a week ago left it alone like alot of people say to do and tried to feed it and no luck. I thought she ate it but when i woke up the mouse was still there.... any tips

2.My friend offered me a 20 gallon breeder tank since im not so happy with the 28 qt tub is it to early to move it to the 20 gallon tank cause i dont wanna stress it out anymore then it is