You mean she wants to have sex? That's not what thirsty means. Not even remotely related
adjective: thirsty; comparative adjective: thirstier; superlative adjective: thirstiest
feeling a need to drink something.
"the hikers were hot and thirsty"
synonyms: longing for a drink, dry, dehydrated; More
"the boys were hot and thirsty"
(of land, plants, or skin) in need of water: dry or parched.
synonyms: dry, arid, dried up/out, bone-dry, parched, baked, desiccated
"the thirsty soil"
(of an engine, plant, or crop) consuming a lot of fuel or water.