Which tooth is it? Becuase you really should remove the tooth. I guess if it is a main front one, that would be a problem. but if it's a molar, even though the thought of losing it is horrible the first go round, really after a couple months she won't even miss it.

the problem with waiting and watching things of this nature is that it does really cause havoc all over the body, infections in teeth can even cause heart problems, breast cancer possibly, the list goes on and on. But heart problems are one of the most widely known factually accepted by doctors, so that says something. Just a few months of something bad like that going on and she's looking at months maybe a year to heal, hopefully not longer.

Was the tooth filled with mercury do you know? That is still standard procedure, to fill root canals with very loose (high mercury to get into small spots) amalgam. And if the tooth was cracked, that'll be seaping for who nows how long into her jaw. do all her teeth hurt at this point after the root canal? if so, that is probably what is happening, it happened to me, took a 2-3 months of heavy duty IV chelation to clear it up.

After what I experienced I think would be happier with a lobotomy than a root canal.