Twelve weeks is very tiny.
It's a big, noisy, smelly, scarey world outside the front gate.
Take it really slowly - put her lead on and carry Rosie in your arms just a little way, making lots of reassurring noises.
This way she will get used to the lead and get used to going out securely with you. I wouldn't take her out in the dark - our Daisy still doesn't like the dark and she's nearly 6 months.
Take her to a nice little walk, just for a short time and have fun, lots of play. Don't worry too much about walking properly on a lead - there's buckets of time for that.
There's no quick fix with this. You will need patience by the bucketful, but be consistent and happy with her so she associates the lead and going out with you as a nice event.
It's early days yet. Let her grow a bit!
Kay
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