I can't offer advice re the divorce, but I was an SAHM for 15 years, initially due to the costs of childcare, and then because I ended up looking for work again during a rather long and deep recession.
Although it took me a long time to find suitable work, I did find that being upfront with prospective employers about the reason for the gap in my employment history was the way to go, and generally better received than I originally thought. That is, the cost of childcare for two and then three children was prohibitive and way exceeded my earning capability.
Play to your strengths. After a 6 year gap, your skills may perhaps need some updating, but will be by no means as outdated as mine were after 15 years. I am an office administrator/assistant. This was my background before children, and it is what I have gone back to in the end.
When I stopped work to have my second baby back in November 1998 the internet was just beginning to get a foothold. During my 15 year break there was a veritable explosion of it, almost akin to a revolution. So much more is simply done online now, which would not have been the case back in 1998. Hence, I was very out of date, but it helped that the internet had also taken over so much on the home front too, and I have always been a good typist anyway. I had also kept my hand in on a basic level with Word and Excel on my home computer, and that meant that going back to an environment where they were in constant use was much less of a problem than it might have been.
Your relative is really throwing you a lifeline with regard to the childcare issue. Make the most, and I hope you find something relatively quickly. In the meantime make sure that you are claiming any benefits and allowances to which you may be entitled. No shame there, you have to try and make ends meet.
Wishing you loads of luck.