2 switches, 2 different islands help!!

[HelpACNH]

I have 2 switches one each for my children. We set up each switch with our own email address so each child have created an island but they both wanted the extra holiday package and when I signed into my account I took over my husband account not knowing when I purchased the add on. Now I have my account on 2 switches with 2 different island. As you can imagine my kid is very upset as she can no longer access her character even though her house is still on the island. I had to create a new account for her and started again (a tent) on her island but is there anyway I can transfer the saved data to her new account? It's all very confusing and I really don't understand nintendo eshop. Any help please

 

[Shiny Shiny Engine]

How to Transfer Animal Crossing: New Horizons Save Data | Nintendo Support

Information on different methods for transferring save data for Animal Crossing: New Horizons to another Nintendo Switch system.

en-americas-support.nintendo.com

 

[HelpACNH]

This doesn't really help as I know you can transfer island between switches but I want my island and character which is already on my switch as saved data transfered to different account which is on the same switch is this possible?

 

[Bilaz]

I’m sorry but I don’t quite understand what happened. What do you mean your daughter can’t access her account? Is her account on the switch gone?

 

[Shiny Shiny Engine]

yea...no that, cant happen

This doesn't really help as I know you can transfer island between switches but I want my island and character which is already on my switch as saved data transfered to different account which is on the same switch is this possible?