I have to agree with
JellyBelly's assessment of Lindsay's feelings about Danny. I suspect strongly that Lindsay knows something is still not quite right with Danny.
I think I can explain the alone part of her conversation, too. Danny basically shut himself off from her. From what we've seen and heard, he's been avoiding her, he's rebuffed her, and at one point, he was actually a bit nasty to her. She's used to having him in her life, and lately, he just hasn't.
As many of you who don't like Lindsay have pointed out, she doesn't really seem to have any friends. Danny was her best friend and she lost him when he lost Ruben.
Again, if she knew about him sleeping with Rikki, that would be a different story. I'd get her anger, even if they weren't officially together. And I get what you're saying as to the reasons behind her reaction...but given what Danny's going through, I'd think if she really cared about him, she could put that irritation and anger aside because the sin she thinks he's guilty of isn't that terrible, and didn't merit the response she gave him.
How long is Lindsay supposed to coddle Danny? And how long is Lindsay supposed to wait for Danny to decide that she's important to him? Loving someone doesn't mean that taking crap from them, no matter the cause, is acceptable. Danny certainly didn't go easy on Lindsay in "Love Run Cold" when she stood him up, and they weren't even officially dating. We know why she behaved the way she did, and it's not an excuse for her. Danny certainly shouldn't be allowed to treat people badly without consequence because he's having a hard time.
I feel for Danny, I really do, but he's not been honest with Lindsay, and is still not being honest with her. He wasn't honest with Rikki either, and that just disturbs me.
Oh, and for a review of the whole episode: C
The case was kind of obvious from the start. It's another episode where I think I would have fired Flack (and now Danny and Lindsay) for being utterly oblivious and bad detectives for not figuring it out a little earlier.
The only thing that saved the episode was the Flack/Danny scene in the beginning, the cheerleader lip-print scene, and the interrogation where all three detectives looked slightly baffled and disbelieving over the lengths the cheerleader went to to get revenge.
On another note: Retribution killing is bad. Bad, bad. But the guy totally deserved it.