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ditto to the comment above, tell us where you are and I am sure someone in your area would have a .22 that you could borrow.
But also, I find it easier not to teach my own spouse, as they tend to be more sensitive to what you say, but some 3rd party they seem to listen more to.

So maybe someone with a .22 is someone she doesn't know (and maybe you don't know yet either) would be available to help teach the basics.

Once she learns those, then you could take over helping with more range time