Shy girls are fun. Text her and introduce yourself.
Then I would take it this way.
"I'm ready to go out if you are but you have promise me one thing"
She'll naturally be interested and say what.
You: "Idk. I'm not sure you can do it."
This will really get those emotions firing for her. After she responds wanting to know again.
You: "That shyness is cute but I can't be having that on my dates. I need more energy. Makes me seem that I might be too naughty for you anyway."
Either it usually works into them say I promise or they try to defend that they are naughty too. Bridge all that into sexual conversation.
Then I would take it this way.
"I'm ready to go out if you are but you have promise me one thing"
She'll naturally be interested and say what.
You: "Idk. I'm not sure you can do it."
This will really get those emotions firing for her. After she responds wanting to know again.
You: "That shyness is cute but I can't be having that on my dates. I need more energy. Makes me seem that I might be too naughty for you anyway."
Either it usually works into them say I promise or they try to defend that they are naughty too. Bridge all that into sexual conversation.