Thanks for the chapter!
MC shouldn't be complaining about her getting the wrong idea. She could get an even more wrong idea by putting her hair, bits of finger/toe nails, skin, etc in the food so a part of her becomes a part of him. It's cute how devoted she is and hasn't turned into a yandere who chains and locks him up in his bedroom, although will have to wait and see how she reacts to him talking to other girls like classmates. Speaking of which, if he's a minor shouldn't he be going to school while she goes to work to earn all the money she thinks he'll need? As for her name it's simple, just look at the name on her mail envelope. Or in this day and age just go online and look up the address in the yellow pages or equivalent and see who's name is listed. Curious as to how his parents knew she'd accept him enough to leave a permission slip in her mailbox.