How do I help a depressed friend?

[audreyII]

Any advice please? DF is already seeing GP so don't need that sort of advice, but more practical everyday things to help me support DF. Do I bring up the subject or wait for DF to do so? Will pretending everything's normal help or hinder? Really don't want to make things worse!
All advice / tips gratefully received. Thanks.

I would wait for her to bring it up, although if she hasn't already how do you know she's seeingf the GP?

Another friend has told me but DF knows I know (if that makes sense)