it does sound like the snake may be acting the way it is because it is stressed out due to improper husbandry/care, but there is no way of knowing how or if its demeanor will change given the proper setup and care.

if you do decide to take this snake in, i'd recommend keeping it in a quiet, low-lit area, enclosure filled with crumpled balls of newspaper and nice tight hides for at least 60-90 days while it settles in order to give it the most security possible. if this snake is actually around 3 feet long (inexperienced people often give estimates on size that are inaccurate) starting out with a 28qt rubbermaid/32qt sterilite will work.

also make sure to quarantine the snake well, and get a fecal to the vet as soon as you can get one.

and i'm with pamela--definitely let this person know that beardies might be a bit expensive for them when it come to feeding (especially babies). i don't think they realize just how many crickets/insects/greens they will need to supply and how much that will cost.