I love Lilith. I'm glad she appeared as much as she did and I love how her and Frasier's relationship grew throughout the show. If you've seen Will and Grace there's a great episode where Jack and Karen see her in a coffee shop and yell LILITH and refuse to call her by her real name. Or if you've seen TNG the actress's character in that was so weird and I bet she had a lot of fun.
Yes please do. It's the one where Riker and others were doing reconnaissance on the planet about to come into warp drive and he got injured and taken to the hospital.