I think 100 feet was the limit. Also fer her to grow she'd need to be in sunlight, so if she was in her mech she'd not get hit by much direct unfiltered light or anything like that so she could still focus more on all the giant robot goodness. But it's just a spitball that I thought was cool. Also I'd say the Square cube law is being bent a decent amount for this RP, mostly cus Mecha themselves wouldn't really work with it, let alone Jenny and her size.