I'm going to edit the practice area for your question. You haven't provided a great deal of information which is a good approach as your postings are not confidential. I highly recommend that you reach out to contact attorneys from your area that respond to your inquiry to talk privately and confidentially with them. Most of us offer free, if limited, initial consultations. At least in that setting you will be able to give one or more lawyers enough information for them to form a useful opinion and provide suggestion(s) as to the available approaches. Good luck.
I agree with Attorney Jones. As you have conceded, your matter is complicated and situations like this always turn on the peculiar facts of the case. I would strongly suggest that you meet with a probate attorney and review all of the circumstances to determine what claims you may have, if any.
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I agree with Attorney Jones and Frederick that you should meet with an attorney to discuss your particular facts. It is not uncommon that trustees misappropriate funds. It is usually hard to recoup those funds because once trustees take them, they generally spend them. It's hard to collect money period. It also is probably not a good idea to wait to make a claim because there are always statutes of limitation in play.
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