I have my bp since the 9th of august and this week I measured and weighed her for the first time (never thought about it before but since i see that kind of info a lot on this forum, i thought i'd do it too )

She's 4 months old (born in May), 60 cm (23,6 inch), 170g
i feed her every week with a mouse (i guess it's a hopper, no info about that at the pet store so..) but i always ask for the smallest one

is her weight regarding her size ok? Is the prey size fine?

Also, she "peed" while ejecting a sort of chalk, what's that thing?
And she didn't shed yet, how often shall she shed actually?

Thanks!