I would call the box office and make arrangements. My dad has limited mobility as well and they were very accommodating
Don't know if they have storage for wheelchairs, but they do sell tickets for people in wheelchairs.
They have storage in the coat room to the left as you enter the theater.
Always best to call
Pending where your seating is she will sit on platform behind regular seating, she will remain in her wheel chair at least that is what I saw on my visit there in April
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