I watched a couple old Who episodes with her in them, in particular the Tom Baker serial "Genesis of the Daleks" and "The Sontaran Experiment", both of which included a secondary companion played by Ian Marter (who also passed away). I think I watched a couple episodes with Jon Pertwee (also deceased) and Elisabeth Sladen as well.
Apart from her appearances in the main new series, I saw one episode of SJA, I thought it was okay-ish but not really interesting enough to grab my attention, and it had a couple annoying characters played by annoying kids...
Eh, anyway, that's kind of irrelevant now I guess.