
First of all, stop calling her if you know she isn't going to come! All she is learning from that is that she can ignore you. What she is doing is normal - she is exploring her new world. If she spends all her time indoors with you, and her outside time is limited, the novelty of 'outside' is far more exciting than you. How long are you spending outside with her? And are you standing still, or pottering about gardening, or playing with something she might find exciting?
Don't forget her breed - she is 'hot-wired' to explore and sniff out interesting smells.