1. Consider contacting the manufacturer. It is most convenient to send it back. If the manufacturer says it can't help, then find another way.
2. If you can get it, you can divide it into small pieces and throw it into the domestic garbage for several times.
3. You can find an adult shop nearby and throw it into a nearby trash can in the dead of night, so that people who see it will think that it is handled by the store. Most people can't tell a silicone doll from an inflatable doll.
Suggestion: Because the dolls who have lived together have some feelings, it is not recommended to divide the body.
I hope the above answers can help you.