I really like
Theresa (that spelling) and
Therese, I would consider using either. If I used them, I would probably use the nickname
Tess some of the time, and her full name the rest.
My grandmother is named
Marie Theresa, which isn't actually a good association for me but I love her name. I would consider
Maria Theresa and
Mary Therese if I didn't have that association.
Theresa JuneTheresa Eleanor Theresa CecileTheresa Iris Theresa FrancesTheresa AliceTheresa CatherineTheresa Helen Theresa MarionTheresa Adele Theresa JosephineTheresa Ariel