Kids and I have all been sick.
My 12 year old isn't adjusting to school very well. She has sensory issues and is just overwhelmed. The work itself isn't a problem and now she's figured out how to keep it all organized, but the press of people and the noise are getting to her. I'm not sure what would be best for her, as homeschooling here is super isolating.
Maybe she needs more time to adjust?
Can you and she problem solve with the school counsellor/a sympathetic teacheron how to decrease some the overstimulation? It could be tricky, though, how to decrease noise - but not single yourself out. (i.e she may be able to leave class early or sit somewhere quiet for lunch - but she may not be game with that).
Gifted children often have sensory issues. Even if she is not "gifted" posting on that subforum may help - they may have btdt.
Lastly - could she HS part time? She may get the socialising she needs, but in more manageable chunks.
edited to add: just read the later posts - great minds think alike! If you return to HSing - could cyber school work? Some cyber options included the online teacher doing everything....it may be cheaper than tutoring.