Sundowners so bad/ wild women please help.

Hello, My mother came to live with me just a week and a half before Christmas. She was on a memory pill, but while she was in rehab they took her off of it. They said it wasn't know longer helping her. So when she was supposed to have her follow up with her Dr once she got out, she had to see a NP instead. So I wrote him a note explaining to him about my mom having sundowners at night really bad. And that she refused to take a bath. And could be very angry at times, if she is made to do something. So he suggested rexulti to try. Well mom has been on it for around I would say 4 weeks now, she dosen't fight me with taken meds like she used to on it. Well the Dr gave me a sample packet to try, but when I went to get it filled it cost 435.00 for one month. And my brother has guardianship over her, and he has her on a very tight budget. So I called the Dr and asked them to put her on something else because of the cost. So they prescribe her serquel. Well last night she was up all night long. She never slept any. She talked the whole night long, because I went to bed at 1:30 ànd she was still talking. She woke me up at 3:30, 4:30, 6:00, and finally the last time was 7:30 this morning. She has slept about 45mins today at the most. And tonight was her first dose of serquel. And she is starting it again tonight. She took her pills at 8:15pm. And I helped her get her underware changed. She wears pull ups. And I always lay out 2more pull up's plus 2 more poise pads. So I'm in my living room doing some reading, and I hear paper being torn, like when you take off the paper off a poise pad. So I set a little while longer thinking she would probably finally go to bed.

So I finally asked her, mom what are you doing? She said I'm changing my pants. I told her she needed to get into bed her pants were fine. So again more paper tearing. So I get up out of my chair, I opened the door. And there she stool with her PJ bottoms on, and a poise pad stuck to the front of her pj and one stuck on the side. And her depends on the floor. I said mom do you have panties on. And of course she said yes. I said let me see, and when I went to look, she started to scream and told me she was going to call the law on me. I said mom you can't sleep in bed without underware. So I was able to get her back dressed again and put her into bed. I know more sat down, and she opened the bedroom door and out she came. She said she needed to talk to me. I said we will talk in the morning. I got her back in bed and she started that talking again like last night. My mom has always been high strung, but I've never seen her like this before since she has come to live with me. Has anyone else ever experance this with there love one before? She is like a wild women on steroids or something. She will get clothes out of the basket I've got them in. She will get clothes out of my dresser drawers. She sleeps in my room, as I haven't gotten her bed down at my house yet due to the bad weather that we have gotten lately. So I sleep in my recliner in the living room. And my bedroom is directly off of it. So I can hear everthing she is doing in there. Until I go to sleep, than I don't know what she is into, until I get up in the morning and then I find the mess that she has done .It's not even close to a full moon or anything. She even takes mirtazpine which is how I think you spell it. She takes it at bedtime. If I give it to her in the day, it knocks her out. But when I give it to her at night, then she is good for 5 hrs and she is up. I just don't know what to do. The serquel is 50mg dose, versa rexulti was only a 2mg dose. I'm tired already and I haven't had her very long. I don't know how people do it for yrs. The only thing that my sister and brother says is, I knew she was going to be a diffcult one to take care of. I thought well then if you think that then come give me a break. So far nothing yet. And I don't think they will either.