I realize that this might be tough with a newborn, but what about a gift of a fun lunch date, or movies together, or something that speaks to having time for her after the baby is born. I love the symbolism of an actual gift as well. I was thinking of perhaps a charm bracelet, if she hasn't already gotten one. You could start with engraved charms for you, her dad, her, and the baby, or something else special in her life, like a sport, etc. But something that acknowledges her need for space and time with both of you might be nice as well.