Is it normal shes still acting like a self absorbed twat

Basically over 1.5 years ago my sister became a hypocrite, even though she was anti men she looked for a relationship and wasted her v on a fat cunt off omegle who imo, groomed her then he stopped making effort once he got his way. Then after 3 months she looked for someone else and jumped into a relationship after only 6 dates, showing off to everyone on social media !!! She took up a 2nd job at a pet shop along with the family business mowing lawns and gardening. She's basically exhausting herself Literally on the go 24/7! Mum is in denial yet its so obvious!! Any ideas why she carries this on ?? Its fcked up!! She used to have OCD and anxiety. She still gets anxiety at times, she acts all happy and never complains and I am not sure why she wouldnt complain iF shes struggling mentally ? So basically 2 weekends ago, he came over on a Friday even though she was working that day with me then she had her 2nd job on Saturday from 8 to 5pm the he left in the morning then came back over sat night. Last week we just finished some work at 30pm and I was told that she's going over there that night even though we had work on the next day! Then he will come over on Friday. Even tho she has work at her second job on the Saturday. What the fuck is wrong with her ?? What a clingy little shit - Why she carry this on??? She looks terrible She still continues Why??? She looks exhausted, and skinny af!! She even runs on the treadmill even tho she mows lawns all week Why she seek a bf and run around 24/like a mad person? She's gonna hit rock bottom 😡😡 I'm cutting her out my life soon as me and mum move away she needs to grow the fuck up and stop trying to fit into heteronormative society. And she still goes there after 1.5 yrs even tho she gets anxiety there and has to "put out", even when she doesn't want to no doubt She also buys him a gift for bday or something yet hes a spoilt rich mummies boy who only studies and fucks around going to the gym. Doesn't even work to earn a dollar and always expects her to play "happy familes", running to amd fro to his ever weekend or ona Thursday after work. What's up with her ?? So, it's weird she keeps fuking him after 1.5 yrs when she knows what men are like and that's why it was so easy for her to find a bf - She's 22. She even wears litlt shitty thongs why? She knows he's a guy and will fuck her anyways- She don't need a thong! Why does my mum encourage her by asking about him?? So dads been in HOSPITAL and all she cares about Is running to the mechanic - Get her car fixed So she can fuck off to his on a Thursday To sunday 6am Come all way back out to ours for womt then go back over Tuesday NIGHT to Wednesday WTF