Danny didn't know mabel that well, he didn't know if his secret was safe. He had to talk to Mabel, he hade to be certain.
"So, Mabel," Danny awkwardly started, "you seem like you love to... chat." "I love to chat, especially with my friends, Candy and Grenda. OMG! You should meet them! They're having a sleepover tonight, they're going to love you!" Mabel shouted in an defining tone. Danny's assassumtions were right, she's a loud, talkative person. Danny didn't know how to keep her from talking. "So, did Dipper tell you anything... interesting this morning?" Danny asked, he had to bring up the subject eventually. Mabel suddenly realized what this was about, but she didn't want Dipper to get on trouble, so she pretended not to know anything. "Interesting, like what?" She said hoping he bought her Innocents. "Look, I know he told, he knows I know, I just need to know if you'l keep it a secret!" Danny said, a bit frustrated now. "I don't know, can I at least tell my friends?" She said, hoping he'd say yes. "I don't even know those two, you can't tell them, please Mabel." Danny hoped he'd convinced. Mabel really liked him, but Candy and Grenda would know she had a secret, then she'd have to tell them. Then, she got an idea.
"What if you meet them, then you'll know that you can trust them, they'll be over in two hours." Mabel said with a hopeful gleam in her eyes. Danny agreed, he knew she wouldn't tell no for an answer. At least now she might think him saying she can't tell them is justified. Here she is going through a lot to keep his secret safe.