I want to get my 30 year old sister a perfume but I'm not sure what she likes

Something around the 125-130$ mark for 30 mLs mark should be good I hope. I don't know a lot about perfume so I wish I could be better about this but I like sweet scents I'm 25 and every time I smell her perfume it doesn't smell sweet like mine and I think she would want something more mature. I wear black opium and Bonbon Viktor&Rolf I really like those but I don't think those would be her exact vibe if that's helpful, but if there's something nice for cheaper for a bigger bottle I could do that too if I can buy it in Canada