Question: I know what excelsior means, I googled it, but is there more of a significance for it here?
Answer: Was this bought on by her husband dying or something she always had?
Question: Wouldn't 7000 songs in a 32 gigabyte iPod be really short songs?
Answer: It depends on the format of the songs. MP3's would take more space, so 7,000 MP3's would be roughly 2.5 mins on average. However, the specs for the 32GB 3G iPod were "Holds up to 7,000 songs in 128-Kbps AAC format."
Answer: It's not exactly common, but yes, it would be up to the judge, and establishing that a person is a "clear and present danger to themselves or others" can result in involuntary commitment in Pennsylvania, where the film takes place. In this case, it would not be hard to argue that, "the person has inflicted or attempted to inflict serious bodily harm on another and that there is a reasonable probability that such conduct will be repeated" (50 PA. CONS. STAT. ANN. ยง 7301 (b) (1)), as he had just physically assaulted his wife's lover and she'd obtained a restraining order. His mental health problems would have been well-documented, so it would have been easy for a judge to order him to undergo psychiatric evaluation, which could (and, in the film, does) lead to extended involuntary commitment at the discretion of a mental health professional.