Um i never said anything about her lighting up the table?
Show me where in this http://www.giantitp.com/comics/erf0050.html or the following pages it shows Misty is still linked up. Theres no magical light, no physical chains like in http://www.giantitp.com/comics/erf0072.html or http://www.giantitp.com/comics/erf0078.html.
Unless its stated otherwise it looks pretty much like she's not linked and if shes not linked the other two are likely to not be linked as well. Its been confirmed on several occasions that there a limits to a caster's capabilities, exaustion alone would lead to the link breaking.
Misty, Maggie and Jack all look ill, the constant forming and breaking of the link would easily explain this better then the cause just being the use of magic.