E.D.
-You could frame a good photo of her and her child. I love getting or giving photos as presents.
-Scrap booking basics.
-Lovely bath scrubs or other sensual goodies.
-A nice journal and a few good pens.
-A good bottle of wine and a trashy fashion magazine.
-A french press for coffee.
-A night out.
-A massage, manicure or pedicure.
Okay, now I'm just listing gifts that *I* would love to get! Try to find her a gift that celebrates *her* as a parent and person, or that would help to pamper her spirit and body.
ETA: I would suggest staying away from phrases that emphasis or define her motherhood as being adoptive. Regardless of the way our child joins our family, we, as mothers, love, nurture and protect our children. To be a Mother, is a daily action. It is a verb. It does not matter if we grew our child in our belly, or in our hearts. Motherhood is the act of love, day in, and day out. That is what we celebrate on Mother's Day. Focus on what makes your friend a Mother. Not on how she is different than other Moms.