mmm... Not saying Maupa is million percent mole, BUT THINK:
1. She ran into diary room first thing after entrance - perhaps instructed to be near it until 'housemeate' called.
2. She pressed that button in very 'actorish' way. - directed ?
3. She initiated pregnancy scam. - again, bigging up BB ratings.
4. We haven't seen her 'hospital'.
and lastly
5. There could be NOT ONE mole.
Think. 3-5 weeks remaining, 8 housemeates still in.
Cheers