POA sibling theft is legal in Connecticut

I keep seeing the same story over and over. The same one I was going to post. In a nutshell; sister who survives off SSD at $700 month insisted on helping mom with her banking by having access to account shortly after dad died. He left my mom well off. So sibling gets a taste of having unlimited access to the money and became evil. You all know what happens next. As I suspected she began living well beyond what her social security checks allow. Even moved mom into her own home to gain access to mom's own pension and social security widow benefits at $4,000 mo. So. Mom passes away in July. I knew there was life insurance so we could give her the funeral she wanted. Sadly she knew my sister was stealing from her and told me several locations the life insurance half of mine and she cannot change it. Well she did it anyway. I probably would have $44,000 or so after funeral payment. She stole it all. Didn't spend it on funeral. Bc there is no funeral only a mass and burial (at moms prepaid plot). Attorney told me that POAs have total control over entire estate due to a new law in Connecticut. POA trumps beneficiaries on life ins policies. I have no Financial inheritance but I do have a fond memory of childhood with two loving parents. Their intentions were always good. As much as she cries over dad’s death for attention, she had no problem totally disrespecting my dad. He and his two sisters lost their inheritance to a greedy in law. Dad was devastated, so went to extremes to assure his money is equally distributed. Connecticut laws changed to placate sibling POAs. Worst part, mom is still not buried. I pleaded with her to bury her after she died. She decided to make some kind twisted party out of it. Probably to proclaim herself moms “angel of mercy” to an audience of relatives who she has turned against me. All I really need is to honor my mom with her funeral details. Several occasions she showed me her funeral file (Mass cards, music, display her special things). I may be able to afford Mass cards online and already had the music downloaded however, there’s nowhere to play it. My heart is broken. Again asked my sister to bury her this weekend. Reply: “I had mom remove your name from everything. I got it all”. Actually I have something she will never have; a clean conscience. All I can do is change my own will. I never want my kids to know this kind heartache