Negima Innuendos

I may be over thinking things on this one. But does the part of Chachamaru, being a android, crushing on a little boy qualifies having a shotacon complex. Also isn't Chachamaru technically younger than Negi himself. Correct me if I'm wrong but wasn't she was built two years before he showed up. So it is a younger girl crushing on a older boy like Asuna or still considered like Ayaka in this matter?