Hi , For her acidity you can prescribe her Proton Pump
Inhibitors like Omeprazole
20mg or Pantaprazole 40mg daily empty stomach alongwith with prokinetics like Domperidone
.To help her constipation
,kindly give her high fiber diet containing Salads, Fruits and Vegetables. Along with give bulk forming laxative containing Psyllium . In case see is having frequent headaches, kindly monitor her Blood Pressure. Hope it helps.