They have said that the pump is not an option but the GP nurse said it would be.
I think the diabetic nurses are correct, and the GP nurse may have a too rosy idea on insulin pumps, GP nurses don't regularly encounter patients with pumps.
To use a pump, you need to be able to calculate carbs and mealtime doses, it doesn't do all the work by itself. So that would be as complicated as using the right amount of insulin with a pen.
One nurse told me about a twice a day option, but another nurse said that doesn't exist?
Twice a day insulin for T1s would be a mixed insulin, so long and short acting in the same pen. It used to be the standard treatment until people found out that many diabetics prefer the flexibility of a separate basal and bolus system, even if that is more and more complicated work.
On a mixed inslin you need to eat and likely snack at set times to adapt to the action of the insulin. A mixed insulin cannot give as tight control as a basal bolus approach
when used by someone who has a very good understanding of how it works and how to decide on doses.
For someone with memory issues, basal and bolus must be a nightmare, and a dangerous nightmare too!
Regular eating times and twice a day fixed doses (administered by herself or by a nurse) would be a nightmare for me, but could well be a blessing for your mother, preserving her independency.
The nurse that said it doesn't exist, was she very young?
I think the mixed insulins were still commonly used until some 10 years ago, and they're still regularly used in T2s.