に行きたくないの

don't want to go to ...?

→ に
phrase Rare #27,215
don't want to go to ...? A conversational question pattern expressing surprise or seeking an explanation. The place or destination comes before に, and の adds an explanatory or confirming tone.
JA: 明日、学校に行きたくないの?
EN: You don't want to go to school tomorrow?

本当にトムオーストラリアに行きたくないの

Do you really not want to go to Australia with Tom?

本当に医者に行きたくないの

Do you really not want to go to the doctor?

本当にトムボストンに行きたくないの

Do you really not want to go to Boston with Tom?

そっちに行きたくないの

I don't want to go over there.

— 風の谷のナウシカ (1984)

本当に病院に行きたくないの

Do you really not want to go to the hospital?

本当にボストンに行きたくないの

Do you really not want to go to Boston?

どうして一緒に行きたくないの

Why don’t you want to go together?