Make sure you return before the expiry date of your 60 day entry stamp OR extend for 30 days and get a re-entry permit at the same time at immigration.
Possibly the problem many times is that many people already have an answer in their head that they want to hear or that suits their plans. Often they don't accept the actual answer because it is not what they wanted OR because there is no clear answer that can be given. Will I get a visa? Will I get in to Thailand after 2.5 visa exemptions and 1.7 tourist visas. Will I need an onwards ticket? Also 90% of the people that post have NOT reviewed the pinned topics or the previous posts or gone through any of the comments, which would answer their question before posting the same question for the 50th time. And they wonder why commenting gets closed quickly ;)
You can do a re entry permit at the airport 24 hrs a day and at the immigration office only during business hours. That is pretty much the only difference ;)
Yes that is an option and would work, although a bit painful. Or IF she will NOT be permitted to piggyback (I can't imagine why as it is very legal??) they could get a 2nd lot of 800k for her. Expensive, but just leave it there and don't touch....can spend some of it for 7 months of the year.