My regal shields were doing great, but when I repotted her a few weeks ago, I noticed she was leaning at the base. I nestled a wedge-like item to hold her up, but when I checked on her to see if she settled in naturally, she's leaning even more drastically, and her base is very unstable (see attached photos).
She also had a recent bout with spider mites, so I gave her a detailed cleaning with water and white vinegar, and I haven't seen any signs of the little buggers, but I don't feel 100% in the clear. She also has "stains" from the infestation (see additional photo of infected leaf).
For background, she's indoors, close to a west-facing window. I water her weekly with about 1-2 cups of filtered water. When I repotted her, I used a half-used bag of organic potting soil that had been sitting in my Florida garage for a while.
I'm really concerned about her recent turn—what can I do to save/revive her?
Picture 1: With wedge holding her up.
Picture 2: Without wedge.
Picture 3: Closeup without wedge.
Picture 4: Infested leaf.
Picture 5: Stem of infested leaf.