You're dropping hints. 你话中有话.
Thanks for the tip. 谢谢你的指点. I want to clue you in on something. 我来提示一下. Let me give you a pointer. 我来指点一下迷津.
Here is the key to the answer. 答案在此. I see what you're getting at. 我知道你话中的意思了 She can't take a hint. 她无法领会暗示.
A little tact please 稍微婉转一点嘛.