get a low dose test cream. Maybe like 10% and have her use about half inch per day. Have her put in right on her labia and within about a week her libido will jump as will her sesitivity. My wife has gone this route and experienced a few sides. Very slight deepening of her voice and just a tiny bit of acne. She stayed on for 3 months and it was great. Stay away from injections as it's just to hard to get a low enough dose. Cream will run you about $120 for 4 months.