I am neither financially independent, nor retired early. I am, however, a single mother of 4 and started a job working from home a couple months ago. My kids are all in school and, due to the time difference between where we live and my employer, there's only about 1-2 hours per weekday where I'm not immediately available to my kids. (I'm still available if they need me, but in another room and they have to keep the noise/interruptions down.) So, my situation is certainly not exactly the one you're asking after, but I had some of the same worries when I took this job. I've been raising the kids by myself for several years, but until recently, had about 10 hours away from them every week day, so was worried we'd be sick to death of each other very quickly.
Happily, I was completely wrong. I do not tire of being with them, nor do they tire of me. Three of them are teenagers and they like me being around despite that. There are occasionally a few minutes where I think I'd give just about anything to get out of the house for an hour (because I'm here ALL THE TIME) but it passes quickly and there's more than enough to keep me engaged, busy, and happy. A happy and unexpected side effect has been that they're also more involved in house work and meal planning because we're already hanging out, talking, etc. when I'm doing it, so they naturally chip in, as opposed to before when I was rushing straight in from work & picking everyone up and thinking only of "i have to make dinner, do the laundry, do the dishes" etc. Also, I know more about their lives outside of our home because it's still fresh on their minds when they get off the bus and I'm right here waiting, un-stressed and waiting to hear all about it. I can only imagine it'd be even MORE so if I didn't have to work at all.