Are these new behaviors concerning or am I just being paranoid?

[Bogertophis]

...
But very recently (about the last couple of weeks) she's been behaving differently at night, just new behaviors I don't see her typically exhibit and its kinda making me concerned.

1) She's seemed extremely restless in the evenings. She does laps around her enclosure, swims around in her bowl a bit, goes into her hides, comes back out, over and over again. Her tongue is flicking the entire time and she goes around and touches everything. And she does it till morning too. She's been active in the past but not to this extent.

2) She keeps pokin' around the top of her enclosure for long periods of time, which again she hasn't done before so it makes me wonder if she's stressed about something I'm just not noticing?

3) She's been moving her head and neck strangely. Before anyone becomes alarmed, no she's not stargazing. Her head isn't going up and back for long periods of time and she's not having issues keeping balance. But for some reason, she'll lift her head up and move it around to sniff things, but when she does her head moves in a sort of twitchy or jerky motion. It looks somewhat mechanical and robot-like if that makes sense. Her head also seems to bob and shake sometimes as well. She also does this thing where she contracts her neck into an S shape for a minute, and then she starts squeezing and contracting the muscles in her neck so hard that she starts to shake. She stops after doing that for a minute and then hangs out for a minute, and then repeats the whole cycle.

The last thing is what concerns me the most because I've just never seen her move like that....

First off, as Homebody suggested, seeing this ourselves would help us, & FYI, I have no experience w/ blood pythons- hopefully a member who does will also comment soon.

BUT, to me it sounds like her restlessness might just be seasonal & have to do with her level of maturity (readiness for breeding).

Also, as far as a snake that twitches or vibrates their neck when reaching out to sniff things: it's not as though our snakes do chin-ups all day- & sometimes it's just some muscle weakness (like when snakes 'periscope' & do similar shaky movements simply because they're reaching outward), or possibly she did something (when you weren't watching) to cause some muscle soreness or even a bit of arthritis, & maybe it will improve in time. If you're really concerned, a vet visit might help you sort that out. She might have just pulled a muscle or something? And how's her sheds? Any chance she has retained eyecaps?

***Is there any reason to think this could be some sort of illness? ***Have you gotten any new snakes lately? ***If so, have you completely quarantined them properly so that any pathogens they may have been harboring (without showing symptoms themselves) did not spread to any other snakes you have, such as this one?

IF this is your only snake & you aren't handling other snakes (like in pet stores or expos) & then coming home & possibly spreading contagious diseases to this snake, or taking this snake elsewhere for others to handle, then there isn't much chance it's something "she caught"- see?