dude she has a child......take it from a guy who knows by experience...having children means having no secksi time..... sad but true fact. If you want to get it back look to having lots quality time and lots of cuddling you're gonna have to work on the romance part of the relationship. Don't forget secksi time is only supposed to be 10% of the relationship....or so i've been told
Do stuff randomly like walk up kiss her and smell her hair, and if she asks why tell her you just want to have her scent to take you through the day....
arrange a date night which includes the kid or better yet deal with all the kid stuff and if she asks why you're doing it just tell her you want to watch a movie you downloaded with her and wanted to get the kid all ready to bed so you would be able to (just make sure its a chickflick and make homemade popcorn! )
then after SMACK DAT AZZZZZZZ MUAHAHAHAHAHAH.......sorry ignore that... i just got carried away there.