What did you message her to start with? I never know what to say to chicks on dating sites. Feels weird to me.
Just write something generic and then copy/paste it to dozens of them.. They love it and can never tell that is what you did...
Personally I always tried to find something that was clearly unique to them or their profile that doesn't at first stand out. On most sites they get a quick preview of the first line or two of your message before they even click to read it so that is where you need to grab the attention. Whether it be something in the middle of a paragraph in their description or depending on the site maybe an explanation to an answer of a question. This showed that it was not a copy/paste generic letter and that you did read not just spamming everyone with a cute pic. In my experience it may not always get a response but it will almost always get a read and a look at your profile. Just like you don't send a letter to every single person you looked at, your message may have been fine but they may just not be into you when they check you out, but at least you know that you had the skill to get them to check you out... build off that. :thumbsup:
Also not sure this came up but NEVER EVER message someone, see they read it and then send another message ranting about how you know they read it and you want to know why they didn't respond (I'll allow every person this mistake once as a learning experience.. two times fix your game son!). While that may get a response, it will not be a positive one. You certainly don't want to go on a date with this person after. So just don't do it!
I've been in open relationships where we both still maintained profiles on dating sites, heck I've had girls I was seeing help me rework my profile
... so I have been privy to the girls side of this more then most men have and often given access to their inboxes to partake in the sarcastic responses to douches. Girls on dating sites are getting spammed constantly with copy/pastes, offers for quickies, dick pics, etc etc.. It makes it hard to get your message noticed and many times your message may have been missed. If you do chose to resend a message later, just pretend like you never sent one before.. don't start it with why didn't you respond last time and certainly don't be mean about it or demand anything.