In fact, I recently came across a maid outfit on Aliexpress with locks already built in. Can I be the devil on your shoulder for a while?
Buy this outfit, put it on. Bring high heels with you, but drive in comfortable shoes. Take with you a lockable gag, heavy leg and hand shackles with short chains, if you have - a latex catsuit too. Do not bring men's clothing with you. When you go, stop at EVERY gas station and fill up with the minimum required plus a small supply in the canister in the trunk. When you arrive and stay with her, do not show her what you have taken with you. Wait for the moment when she decides to go for a long time - to work, shopping or somewhere else. Just give her a bunch of keys and ask her to keep them in her purse while she's away. When she leaves, get to work! Destroy a shoes-for-drive. Wear a latex catsuit, top with high heels and a maid outfit. Add shackles and a gag. Lock everything up. You were honest and gave her ALL the keys, weren't you? When she comes back, give her the envelope. In it is wroten: "Take a few selfies with me. I'll help you with the housework. Hide a keys, unlock me only at morning. On your table - my wallet. Hold it till last day of my visit. Take a pictures while i here. Send it me by paper mail later." Then you must go all time on high heels and go with her at last day and buy a new shoes. In maid outfit!
P.S. Be cruel as you dare. Remember - i have a mad mind.
Not all dreams must come true. Choice with a cold mind. Be careful. Not crazy as me.