Such tiny text...try to use larger txt in the future since I had a hard time reading it without zooming in.
For her striking in her tank, could she be insecure in the tank that's making her wig out? Is it very open while the tub you had her in was more cave-like and secure? If she's flipping out in the tank why don't you just keep her in a tub if that's where she's acting the best?
Also, I don't know what the white markings are: do you have larger up close photos of them?
And as for feeding in the enclosure, that's the ONLY way I feed and I have yet to have a snake become cage/tub (I only use tubs) aggressive for it. For swallowing substrate, I use paper towels so I don't have that issue. I personally recommend people to feed in their enclosures over not, and if they use aspen you can put a paper plate down with the feeder atop it (if feeding F/T).