What would YOU suggest?

I often collaborate with a Japanese person for a variety of International events, especially any ones involving English. Some time ago, she asked me for advice that I've never been able to give a good answer for, so maybe I can get advice here. Basically, she has a young daughter, maybe in K or about first grade- I'm not entirely sure myself- and because the mother has very strong English, she wants her daughter to also learn English. I expect the mother hasn't tried simply because she doesn't feel confident in her own English abilities, and despite all the stuff in this sub, it feels like Japanese people want to learn English from natives, officially qualified or not.

Now you may ask, why not teach the daughter yourself and make some side cash? Very simple: I'm on an instructor visa, and would rather not go through the hassle that is getting immigration to put an exception on visa status or whatever it officially is. In addition, the mother has told she has experience with some of the eikaiwas in the area, and she is… less than impressed, to put it mildly. Y'all know the down low about eikaiwas from our side, so I assume you can guess the feelings of someone who's a bit more serious about having their child actually learn English rather than be babysat for an hour.

Which is why I ask this sub: for someone who ACTUALLY wants their child to learn English (I know, it's crazy, isn't it) but doesn't want to deal with the local eikaiwas in the area, and I'm ruled out due to visa situation… what would you suggest? I suppose online is a possibility, but something tells me that online lessons and young children don't mesh so well.