Hi, ILN! (Sorry, I don't know your actual name)
A little bit of a late welcome to the group! Speaking from experience, I can tell you that your open and welcoming attitude will do wonders for your relationship. My spouse accepts me, and after a lot of years, is still the center and the joy of my life.
As Sheila wrote, you are, of course, the one who knows your own girl best, so you have to judge accordingly. But I can tell you that it means a great deal and is really special when my spouse remembers my birthday as well as "his."
Since she usually just gives "him" a card, a simple card to me is just fine as well. Of course, if "he" was to get some gift, well, I'd certainly want one too!
A few times, for my birthday or Valentine's Day, she's sent me flowers and, of course, I loved that!
The real thing that shows through is the love that you are giving her, and, as you know, that is what makes all the difference!
Hugs,
Persephone.