Yes, the Dormeasan® would be an excellent thing to try, as long as she is not taking prescribed sleeping or anti anxiety medication.
Poor lady! 40 years is a long time to suffer, but the menopause is often the cause of sleeping problems.
Do let us know if it doesn't help, as there may be other things she could take as well.
Best wishes,
Amy
Do you have questions? Please feel free to ask.
Stay up to date with the latest pollen information by finding your local pollen forecast from over 30,000 locations across the UK.