Look real close under leaves see if you have bugs
Doesn't look like a rust spot to me. What type of medium are you in? Soil/ soilless? What are you feeding? How often are you watering?
Very nice pics. To me it looks like a temperature fluctuation problem.
What are your highest and lowest temps during a 24/hour period?
week 7 ? i think she's hungry and possibly root bound
what do you have to feed her? i would go light on the nutes (1/4 strength at first) and you may consider putting her in a larger pot
happy growing
ahhh a mother plant........ i agree with d0rk top her so she get bushyim only growing this plant to clone from, not planning to ever flower this