Not sure, maybe they could check with their airline??

An imposter!!

I'd suggest that she should phone the airline... she might be asked to purchase 2 seats and they need to make sure they're next to each other so the sooner she does it the better, even if they say it's fine, it'll be worth the phone call just for the reassurance.

Unfortunatley its one of them, she could be honest and telephone them to ask,however they might see this as an opportunity to make a charge for this to make a quick buck.
Whereas if she didn't say anything it might not be a problem, but then you take a chance, it's sod's law when it comes to things like this.

For example when we booked our late deal I was informed that now on late deals there is a reduce baggage limit of 15kg. I was going to ask how much It was to bump it up to 20kg but decided not to.Then the Tickets arrived anyway which said 20kg each ? If I had rang them Im sure they would have charged me.

Theres a forum here, http://forums.treemedia.com/fb/archive/index.php/t-223.html it looks like 300lb (21.5st) is the rough guideline, I would still recommend ringing the airline.

Dave