Based on interviews (https://thecharmedcafe.proboards.com/thread/10795/season-3-4) and behind the scenes (https://thecharmedcafe.proboards.com/thread/11625/archive-news-chronology-scenes-stuff) drama (https://thecharmedcafe.proboards.com/thread/11578/situation-set-2001-words-observer), it seems she was not too liked (https://thecharmedcafe.proboards.com/thread/11141/happened-phoebe).

Why?

htY6DE_ftP0

https://news.amomama.com/247994-rose-mcgowan-alyssa-milanos-feud-explain.html

McGowan (https://www.lipstickalley.com/threads/alyssa-milano-calls-out-former-charmed-sister-rose-mcgowan-update-rose-fires-back-exposes-alyssa.3839438/page-7) revealed that throughout her years working (https://www.reddit.com/r/charmed/comments/9s5dfo/should_the_role_of_paige_matthews_had_been_given/) with the actress on "Charmed," (https://www.datalounge.com/thread/9698451-charmed) Milano had created (https://thecharmedcafe.proboards.com/thread/13053/alyssa-rose-revived-onset) a toxic environment (https://www.reddit.com/r/charmed/comments/7tzz19/rose_says_charmed_was_soulcrushing_and_exhausting/) on set, so much so that she cried (reddit.com/r/charmed/comments/iemzfq/in_light_of_whats_happening_with_the_cast_right/) each time the show was renewed (https://www.datalounge.com/thread/26794783-rose-mcgowan-accuses-alyssa-milano-of-being-a-%E2%80%98fraud%E2%80%99-in-ugly-twitter-feud).

McGowan described Milano's behavior on set, revealing that she frequently ranted and screamed, using profanity and abusive language. McGowan stated that she never socialized with Milano (http://www.etonline.com/media/video/rose_mcgowan_reflects_on_relationship_with_fellow_charmed_star_shannen_doherty_amid_cancer_battle-197988) or their costar Holly Marie Combs (https://www.reddit.com/r/charmed/comments/ofqozs/anyone_know_why_rose_isnt_friends_with_alyssa_and/).