Hello, Kelly has given you some great advice there. That's what we did when we were teaching sleep to ds.
You've done really well getting your lo to sleep that quickly using pat/sssh, but, as Kelly says, it's best if you stay with her for another 20 mins or so after she seems to have gone to sleep. Try it, and if you leave your hand on her back gently, you'll probably feel her 'jolt' after 15-20mins. You being there may help her through her transition, or you may have to sssh a bit more. If you do this for a few days (yes, it's really boring and time consuming :roll: ), she should learn to go through this sleep transition on her own, and you won't have to do it again.
Just another thought -
Then she closes her eyes and I put her in her crib and continue to pat shush for maybe 3-5 minutes
Are you sure she's not asleep before you put her in the crib? It's important that she's not, b/c she may be waking up during this sleep transition thinking, when I went to sleep, I was being held, and now I'm in a cot on my own, where's everybody gone? This may be why she's waking.
HTH, let us know how you get on