Brought home a severely underweight BP baby. Please help me get her back on track

[Bogertophis]

...I stand by my choices and now have a gorgeous little snake. What one person looks at as a 'normal' boring snake is still worth the same care as a more expensive coloration. "It's just a snake, get a new one" is something I've heard more than once, which makes me a little sad that people have that outlook on something that relies on 100% of its care to come from the person who CHOSE to buy it...

As if "just a normal colored snake" is somehow less deserving of good care...because the price tag was lower & it's less "exotic"? No way!
"Normal" is what nature created, it's what survives best...