ball python still not eating

i bought a ball python that was 2 years old at the time back in september, she ate every week after i got her without fail then she stopped eating around december and has only ate one time from december till now. i know they can go off food for the winter but where i live its already 16 degrees celcius out and spring weather so i thought she would be eating again but i tried last night and still nothing. just wondering what everyones experience with this is and when i might expect her to start eating again, thanks.