ErikBush97, I just read through this thread, and I want to say I'm sorry for the worry you are going through.
One big question that I noticed that no one was asking- is your snake eating? If she is eating, has she regurgitated (vomited) at all? Regurgitation and refusal to eat are some of the most common early signs of IBD in boas. In pythons the neurological stuff usually shows up first. Boas have a much slower time course of the disease and some can in fact be asymptomatic carriers and live long healthy lives even though they will infect the rest of a collection.
I don't think it's likely that it's IBD from what you are describing- IBD tends to be more pervasive and the snake will lose proper coordination and muscle control regardless of where it is- cage, being held, etc. However, the disease is progressive and can be tricky to catch in the early stages.
This is an incredibly good website resource
Inclusion Body Disease
You can also go on YouTube and search for inclusion body disease or IBD, or BOID and you will turn up many videos. Pay attention to ones that say in the description that it was confirmed IBD, so you aren't watching something that turns out to not be IBD.
There are a number of other illnesses and conditions that can cause stargazing and head wobble. Certain genetic mutations, such as the spider gene in ball pythons, cause it. Some spider balls are so bad they twist and knot themselves up, wobble all over like palsied eldery, and have difficulties eating.
Other viruses, like West Nile, Paramyxovirus, and Ophidian virus can also cause neurological symptoms. These viruses are usually much faster onset and progress rapidly to death.
Certain vitamin deficiencies can cause neurological problems in snakes. In that case, the bloodwork should show it and a few vitamin shots can help.
Exposure to pesticides can also cause neurological problems. Usage of "No-Pest" strips as a treatment for mites has been known to cause stargazing and incoordination in snakes exposed to it at too high of a dose or if it gets into the water. If you've been using these strips, that might be the cause.
Best of luck- keep us posted. I would continue to keep this snake quarantined and, as others have mentioned, hold off on other purchases until you know what's going on with her.
I noticed a few other members commented on buying snakes too quickly. The concern there, which I'm not sure anyone explained, is that if one is acquiring snakes very quickly, that one will run out of proper quarantine space. Each new animal has to be quarantined not only from the established collection, but from other quarantined animals. So, if you buy Snake1 in April, put it in quarantine, then buy Snake2 in May, then Snake3 in July, etc, you will run out of places to quarantine them properly and there's likely to be some cross-exposure.
All new snakes should be quarantined for a minimum of 3 months; 6 months is ideal.