I need advice to help my friend

Hey folks! Im a friend looking to help her friend as in around 10 years im probably going to go in to Perimenopause and I hope someone helps me!

My friend is in her mid 40s and has began to start to show signs of Perimenopause. I recognise the signs as my Mum was very similar. (She was only in her late teens when she had me).

The signs are bouts of deep depression, feeling hopeless and in turn using poor coping mechanism for her it is alcohol (for my Mum it was gambling), wonky periods and she also mentioned flushes.

Ive gently mentioned seeing her GP particularly for the depression. This got quite a dramatic response of what ifs, that simply will not happen. Thats not linked or at least not entirely in the 8 years ive known her, irrational responses arent new.

I am straight shooter about it because, its gonna be me before I know it so naturally, I saw no shame in mentioning it!

How best can I help her?