Since she made an apron, if she enjoyed the process maybe you could help her pick out a really simple skirt pattern and the two of you could sew together, you could work on your project and she could work on hers and you'd be there if she needed it. If she's not interested and didn't enjoy the process, don't push. Maybe she'll find that she wants to try quilting once she sees you in action or maybe she'll want to sew garments or maybe she'll want to knit, crochet, cross-stitch or play video games... everyone has something that catches their fancy, sometimes it just takes a while.