Hey OP. Given your background I would choose a subject that uses configuration rather than code. This means you learn how to use software with pre- existing 'drag and drop' capabilities rather than coding from scratch.
The data route, Power Bi is a good choice but you need an analytical mindset and I personally wouldn't try this with no pre-existing IT knowledge at home.
information Security could be another route but most of the learning here is the context and some tooling. Many companies use different tools to analyse, monitor and report on security controls and breaches, so the first point is understanding policy.
Programming languages can be learnt but you'd be better off doing this once your in situ. python is ok, largely used in data. C# is taught at university as standard now. Java and .Net are still the most popular in industry by far with C# coming alongside. SQL isn't a programming language as such but is a query tool, so you can run queries against databases source or report on data.
Personally though, I would recommend you look into Salesforce. This is a system that companies use for managing sales leads, customer servicing and all sorts. The UK has a massive shortage of skills and starting salaries can sit at £40k for juniors. salesforce provides access to all the training themselves online, and you could contact Supermums who specialise in training, placements for work experience and eventual recruitment for women, especially those returning to work.
The system is easy to learn, working in a team as an SF Admin your role would be to make changes to existing process flows or design new ones as you learn how SF can be configured.
Another area with skills shortage is OpenText Extreme. This is a document management system used for sending emails, letters SMS etc there are rules around which content, paragraphs should go into what comms, like regulatory statements, or product specific content like your car insurance renewal price. All of these letters these days are auto generated.
And robotics, systems like Blue Prism, again configurable used in organisations for automation of business processes.
So generally I would stay on the 'business systems' side of IT where you don't need a degree or harder tech knowledge. You can learn the system then gain the experience as a junior working your way up the salary level with experience.