Student or Learner
Is this sentence correct?
I will contact Mary's mother to arrange for her to come in next week to sign the paper.
But I don't know if you need Mary to come in, or Mary's mother. The "her" is ambiguous.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.