OP already addressing work situation starting a course in September with a view to starting a small business, FDH had said he would continue to support this.
OP had her DD in her late 30s so probably had a career herself before this.
Being a SAHM has obviously been a full time job for OP :
I cared for DD, took her to from school, after school activities, play dates, etc. Our bus service is pretty useless around here, so I still have to take her in or pick her up if the bus is a no show/late or she has to be in school early or finish late or if the weather is really bad, school is three miles away. I have cleaners once a week but still have to do housework in between plus shopping, laundry, cooking. Ive managed all our finances, all the 'domestic paperwork', insurances, taxes, etc. Project managed the sale and purchase, renovation decoration and furnishing of our current house, and the annex, plus garden buildings. Looked after the animals dogs; fed, walked, vets, etc plus the chickens, cat. Sourced and booked all our holidays and other events. Managed the purchase, of the villa, sourced and installed all the furnishings, found a manager. I manage all the bookings, payments, bills, annual accounts. The annex is a holiday let, so I manage the bookings for that too, the cleaning and prep for the bookings. That has been my job all these years and will be until I have to sell the house. It's not unusual for me to struggle to keep on top of all these things and it doesn't fully stop at the weekend.
I too had my children in my mid-late 30s became a SAHM - joint decision. We worked out what it would cost to employ someone to look after our large garden, looking after house etc. Then there were the tax breaks by me not earning. All this facilitated my late DH in furthering his career. When the children went off to uni I did a lot of volunteer work which I enjoyed immensely.
Being a SAHM is not always an easy life.