Absolutely!!..My dad is 95 and has never had any feelings for me. And that's putting it mildly..But I'm his sole caregiver since Mom died (2010).I have a sister in another state and does nothing but calls him every night..and agrees to everything he says ( solidifying her inheritance)..He treats me like crap and always has. I'm sure he has did a few underhanded things (financially) since my mom died to take away from me and give it to my sister. I'm quite sure things will blow up one day unless things change. Which I don't expect to happen. He exerated, lies and acts incompetently a majority of the time and my sister is a "gold digger." Nothing is ever enough for her and always wants more. She's "milked" a couple of husband's and now working on my dad. And he's not smart enough to realize. I need to do something before it gets to the point of no return. Any advice?