Making it "fair"

I'm converting my old comic book story, Incognito, into prose and have been giving it to my writing group for suggestions. I just finished rewriting the last scene of what would have been issue one and now I'm onto issue two. And I have to say that I absolutely hate what I wrote. There is one scene that makes absolutely no sense to me. I'm not even sure how to fill the void. Maybe I need to read further on to get an idea of what I can do to fix it but I feel like I put my character into a dangerous situation and got them out too easily.
It's kind of like in Stephen King's Misery, when Annie says the way he brings Misery back to life isn't realistic or fair. It's kind of like that, except not as extreme. I'm not trying to bring some back to life or rescue someone from going over a cliff in car. I'm really just trying to get someone, undercover as a prostitute, out of a room before they actually have to get to work. Right now, she sneaks into the bathroom and calls in a bomb threat but realistically how long would it take the cops to get there? And everyone still sees her leaving the building, which I want people to see her but I don't want it be that obvious. I'm just not sure it's the best way to get what I want in the story. But on the other hand I do want her to seem like an amateur at crime fighting so maybe that is why originally wrote such a sloppy and poorly planned escape?

Thank goodness writing group decided to postpone a week other wise I'd only have two pages to take. And if I can't break through this funk I will only have two pages to take on Sunday.
I'll work on it for a few more minutes tonight but then I must be off. Pam and Jim are getting married on the Office tonight. I can't miss it!