yep, you get her a gift, any kind of a gift, and shes going to read into that.
Text her a happy birthday and tell her you and she should grab dinner and drinks sometime to celebrate. Don't make a specific date about it in the opening text. if you don't want her to read into it, let her be the one who actually sets the date.
You've acknowledged casually and in a non committal way.
Then take her to a reasonable restaurant ($40-$50 dinner) and some drinks. Then go plate.
Be careful with this one. If she's catching feelings it's not cool to lead her on. That's what ends up damaging females for the next dude.