Make her happy and listen to her. After that you must smell nice, if you smell bad she will not spend time with you 
But the most important think is if she like you she will be with you you can't make some spell for love.
What do you mean smell nice ? Like shower often or good perfume ? Or what ? But the most important think is if she like you she will be with you you can't make some spell for love. For the topic I can say that if you spend more time with her probably she will fall for you from personal experience there are only 2 options: She fall for you or you can see exactly what is going on with her and you can see if she is falling for somebody else.