Pregnancy massage would be the most appropriate one for your wife right now. Just make sure the therapist has been properly trained in prenatal massage. Since she's just going into her 2nd trimester, she can either be side-lying or if the therapist has a body support system which can comfortably accommodate a pregnant woman throughout the pregnancy. Massage with help alleviate the many stresses that a woman's body goes through during pregnancy such as; low back pain, shoulder pain, hip & ligament pain (from the growing belly), sore feet, water retention, swollen ankles & feet. There's also the emotional & energetic benefits of massage too.